a269 vs a249 stainless steel, a554 vs a269,astm a249 or a269

difference between a269 and a213 | a269 vs a249 stainless steel | a554 vs a269 | astm a249 or a269

Difference between ASTM A213 and A269 Stainless steel tubing

What are the main differences between the ASTM A213 and A269 Stainless Steel Tubing Standards, other than their stated uses in the standard. Is one better than the other for general service Type 304 instrumentation tubing?
Also why is the finish on some tubing conforming to these standards dull while another source might have a polished surface?

A-213 pertains to seamless ferritic and austenitic alloy tubing of minimum wall thickness. Some of the ferritic compositions within the spec are not truly stainless. A-269 is seamless and welded austenitic stainless steel without specifying minimum wall. In 304 there are some minor composition differences, but these are generally not consequential. Most 304 on the market will meet either composition spec. The difference between the bright and dull finish depends on whether the producer finished by bright annealing or by pickling. A-269 is more commonly used for specifying instrumentation tubing. I suggest specifying passivated tubing, and if to be installed by welding, be aware of the significant effect of sulfur level on weld penetration and the difficulty of welding two pieces with very different sulfur contents.

Neelcon Steel offer a wide selection of Stainless Steel Tubing in welded and seamless. Neelcon Steel Wholesale Various High Quality Stainless Steel Tubing in all shapes and sizes and with any specifications that the clients, More then 1500 Clients in India, United States, Canada, United Kingdom, United Arab Emirates, Iran, Singapore, Saudi Arabia, South Korea, Indonesia, Malaysia, Italy, Thailand, Germany, Australia, Mexico, Taiwan, Turkey, Pakistan, Spain, France, Brazil, Vietnam, Netherlands, Japan, Philippines, Kuwait, Poland, Qatar, Oman, Egypt, Colombia, Argentina, Nigeria, Finland, Ireland, South Africa, Russia, Bangladesh, Israel, Hong Kong, Chile, Algeria, Romania

Difference between ASTM A249, A270, A269, and A554

ASTM Specification & Tolerance For Tubing & Piping

ASTM Specification & Tolerance For Tubing & Piping

Specification Allowable Outside Diameter Variation in mm Allowable Wall Thickness Variation Exact Length Tolerance in mm Testing
Nominal Diameter Over Under %Over %Under Over Under
ASTM-A213 Seamless Boiler Superheater and  Heat Exchanger Tubes Under 25.4 .1016 .1016 +20 -0 3.175 0 Flattening Test
25.4-38.1 incl .1524 .1524 +22 -0 3.175 0 Tension Test
38.1-50.8 excl .2032 .2032 +22 -0 3.176 0 Flare Test
50.8-63.5 excl .254 .254 +2 -0 4.46 0 Hardness Test
63.5-76.2 excl .3048 .3048 +22 -0 4.76 0 100% Hydrostatic test
76.2-101.6 incl .381 .381 +22 -0 4.76 0 Refer to ASTM A-450
ASTM-A249 Welded Boiler Superheater, Heat Exchanger And Condenser Tubes Under 25.4 .1016 .1016 +10 -10 3.175 0 Tension Test
25.4-38.1 incl .1524 .1524 +10 -10 3.175 0 Flattening Test
38.1-50.8 Excl .2032 .2032 +10 -10 3.175 0 Flange Test
50.0-63.5 excl .254 .254 +10 -10 4.762 0 Reverse Bend Test
63.5-76.2 excl .3848 .3848 +10 -10 4.762 0 Hardness Test
76.2-101.6 incl .381 .381 +10 -10 4.762 0 100% Hydrostastic Test Refer to ASTM A-450
Minimum Wall tubes +18% 0 available On request
ASTM-A269 Seamless & Welded Tubing for General Service Untp12.7 .13 .13 +15 -15 3.2 0 Flare Test (Seamless Only)
12.7-38.1 exc! .13 .13 +10 -10 3.2 0 Flange Test (Welded Only)
38.1-88.9 excl .25 .25 +10 -10 4.8 0 Hardness Test
88.9-139.7 excl .38 .38 +10 -10 4.8 0 Reverse Flattening Test
139.7-203.2 excl .76 .76 +10 -10 4.8 0 (Welded only) 
100% Hydrostatic Test Refer to ASTM-A269
ASTM-A270 Seamless & Welded Sanitary Tubing 25.4 .05 .20 +10.0 -10.0 3.2 0 Reverse flattening Test
38.1 .05 .20 +10.0 -10.0 3.2 0 100% Hydrostastic Test
50.8 .05 .28 +10.0 -10.0 3.2 0 External' polish on all tubes
60.5 .05 .28 +10.0 -10.0 3.2 0 Refer to ASTM A-270
76.2 .08 .30 +10.0 -10.0 3.2 0
101.6 .08 .38 +10.0 -10.0 3.2 0
ASTM-A312 Seemless & Welded pipe 3.175-38.1 incl .4 .79 Minimum Wall 12.5% under nominal wall Specified 6.4 0 0 Tension Test
38.1-1016 incl .79 .79 6.4 0 0 Flattening Test
101.6-203.2 imcl 1.59 .79 6.4 0 0 100% Hydrostatic Test
(Normally Random Lengths ordered Refer to ASTM A-530
ASTM A-358 Welded pipe 219.08-750mm or 0.01 inch +0.5% -0.3 6.0 Refer to ASTM A-530
Difference between ASTM A213 and A269 Stainless steel tubing

Difference between ASTM A213 and A269 Stainless steel tubing

What are the main differences between the ASTM A213 and A269 Stainless Steel Tubing Standards, other than their stated uses in the standard. Is one better than the other for general service Type 304 instrumentation tubing?
Also why is the finish on some tubing conforming to these standards dull while another source might have a polished surface?

A-213 pertains to seamless ferritic and austenitic alloy tubing of minimum wall thickness. Some of the ferritic compositions within the spec are not truly stainless. A-269 is seamless and welded austenitic stainless steel without specifying minimum wall. In 304 there are some minor composition differences, but these are generally not consequential. Most 304 on the market will meet either composition spec. The difference between the bright and dull finish depends on whether the producer finished by bright annealing or by pickling. A-269 is more commonly used for specifying instrumentation tubing. I suggest specifying passivated tubing, and if to be installed by welding, be aware of the significant effect of sulfur level on weld penetration and the difficulty of welding two pieces with very different sulfur contents.

Difference between a213 vs a312 Stainless steel tubing Download Pdf
Stainless Steel Pipe Specification Standard - ASTM A312 A358 A213 A778 A249 A269 A376 A409

Stainless steel are iron-based alloys usually containing at least 11.5% chromium. Other elements, Nickel being the most Important, may be added in combination with chromium to obtain special properties. Stainless steel are highly resistant to corrosive attack and to oxidation at high temperature. in general, corrosion resistance and oxidation resistance increase progressively, though not proportionately, with the increase in chromium content.

Stainless steel pipe and tubing are used for a variety of reasons: to resist corrosion and oxidation, to resist high temperature, for cleanliness and low maintenance costs, and to maintain the purity of materials which come In contact with stainless. The inherent characteristics of stainless steel tubing permits the design of thin wall piping systems without fear of early failure due to corrosion. The use of fusion welding to join such piping eliminates the need for threading.

Type 304 stainless is the most widely used analysis for general corrosion resistant tubing and pipe applications, it is used in chemical plants, refineries, paper mills, and food processing industries. Type 304 has a maximum carbon content of .08%. It is not recommended for use in the temperature range between 800° F and 1650° F due to carbideprecipitation at the grain boundaries which can result in intergranular corrosionand early failure under certain conditions.

Type 304L. Is the same as 304 except that a .03% maximum carbon content is maintained which precludes carbon precipitation and permits the use of this analysis in welded assemblies under more severe corrosive conditions. Type 318 is much more resistant to pitting than other chromium nickel alloys due to the addition of 2% to 3% molybdenum it is particularly valuable wherever acids, brines, sulphur water, seawater or halogen salts are encountered. Type 316 is widely used in the sulphite paper industry and for manufacturing chemical plant apparatus, photographic equipment, and plastics.

Type 316L, like 304L, is held to a maximum carbon content of .03%. This permits its use in welded assemblies without the need of final heat treatment. It is used extensively for pipe assemblies with welded fitting..

Other fields where stainless steel pipe and tubing are used are: aviation, electronics, automotive, cyrogenic, marine, air conditioning and heating, medical, architectural and textiles.

Specifications:

ASTM A-312/ASME SA-312 Welded Stainless Steel Pipe

ASTM A-358/ASME SA-358

Scope:

Pipe intended for high temperature and general corrosive service as in A-312, plus electric fusion welded pipe as in A-358 and intended for high temperature and general corrosive service or both.

General Requirements:

Conforming to the above specifications plus applicable parts us ASTM A-530.

Range:

ASTM A312 pipe is more commonly found from 1/8" IPS to and including 24” NPS in standard schedules 5, 10, 20, and 40. On special application, sizes can be produced to 60” lPS through schedule 80 walls by certain mills. ASTM A-358 is usually produced in sizes 8” IPS and larger and where filler metal is added to the weld. This specification covers five classes of pipe and are usually determined by the end application and needs of the pipe.

ASTM A-312 pipe is manufactured by two different processes. Pipe through 6” IPS is manufactured by the continuous welding process and is very similar to welded tubing. Coils of flat roll strips are fed into sizing rolls and welded. Material is then annealed (usually in an open air furnace), straightened, cut, pickled, tested, and inspected. In full finished pipe, material is cold worked after welding. This can be done by rolling, forging, or drawing the weld bead; but primarily the weld is rolled.

Pipe 8” IPS and larger is manufactured by the batch method or process. Unlike the continuous welding method. material made by this batch method is made in single lengths. Plates, cut to length and width, are formed from flat into tubular shape by a press and welded. Material is then annealed, sized, and straightened, ends trimmed or cut to specific smaller lengths, pickled, and inspected. 

Stainless Steel Pipe specifications

Pipe and Tubing

“As-Welded” Grade “

“as-welded” pipe and tubing is straight-seam welded using ASME qualified automatic gas tungsten-arc procedures andcan be supplied in a wide range of diameters and wall thicknesses from any of the weldable corrosion resistant alloys. Normally furnished with square cut ends, pipe with beveled, belied, or roil-grooved ends can be provided. Spot radiography or 100% radiography of welded seams can also be performed. pickles and passivates its pipe and tubing to maintain corrosion resistance and to prevent surface discoloration from free iron oxidation. “As-welded” pipe and tubing is commonly used in pulp and paper mills, food processing plants. and other industries where corrosion resistance is essential.

ASTM A 778

This specification covers welded unannealed stainless steel tube intended for low to moderate temperatures and corrosive service where heat treatment is not required for corrosion resistance. A 788 is considered to be the most applicable ASTM specification for “as welded” pipe and differs from it only in that a transverse guided-bend test and a transverse tension test are required per lot.

ASTM A213 (ASME SA-213 is identical)

This specification includes minimum wall thickness seamless austenitic stainless steel tubing intended for high temperature usage such as boiler, superheater and heat exchanger tubes, Production is generally limited to tubing A” inside diameter to 5” outside diameter and .015” to ,500” inclusive in wail thickness. All material is to be furnished in the heat treated condition.Alaskan stocks “average wall” austenitic A 213 tubing.

ASTM A249 (ASME SA-249 is generally identical)

This specification covers welded austenitic stainless steel tubing intended for high temperature usage such as boiler, superheater, heat exchanger, or condenser tubes. Production is generally limited to tubing 1/8" inside diameter through 5” outside diameter and .01 5” to .320” inclusive in wall thickness. All material is to be furnished in the heat treated condition.The principal manufacturing procedures specified under A 249 are:

1. Automatic welding process with no addition of filler metal. 
2. Hydrostatic or non-destructive electric test of each tube. 
3. Tension, flattening, flange. reverse-bend and hardness tests required each lot.

ASTM A269

This specification covers seamless and welded austenitic stainless steel pipe intended for low or high temperature and general corrosive service. Production is generally limited to tubing 1/4” inside diameter and larger and .020” in nominal wall thickness and heaver. All material is to be furnished in the heat treated condition, Mechanical requirements are the same as listed under A249.

stocks A 269 tubing to 4”OD, with up to 8”OD available,

ASTMA 372 (ASME SA-312 is generally identical)

This specification covers stainless steel seamless pipe and straight-seam welded stainless steel pipe intended or high temperature and general corrosive service. The A 312 manufacturing process is suited to high-volume production and is therefore generally limited to diameters and schedule wall thick nesses shown in ANSI B36.10 and ANSI B36.19 (See page 4,40). stocks A312 pipe with immediate delivery available from a complete inventory of both common and special alloys. The principal manufacturing procedures specified under A 312 are;

1. Welding without the addition of filler metal. 
2. Annealing after welding. 
3. Tension and flattening tests per lot. 
4. Hydrostactic testing of each length.

Stainless Steel Pipe pecifications

Pipe and Tubing (Continued)

ASTM A 358 (ASME SA -358 is generally identical with some additional requirements) This specification covers stainless steel pipe intended for high temperature and general corrosive service. Production is generally limited to diameters and schedule wall thicknesses of 8” and larger as shown in ANSI B36.10 and ANSI B36.19 (See page 4.40). Pipe is normally welded with filler metal (except the root pass on Class 4) and can be specified as (a) single or double welded; (b) 100%. spot, or no radiography; (c) heat treated after welding. made from annealed plate and not heat treated after welding, or made from unannealed plate and not heat treated after welding. The principal manufacturing procedures specified under A 358 are: 

1. Hydrostatic testing of each length (unless waived). 
2. Transverse guided-bend tests and transverse tension tests per lot. 
ASTM A376 (ASME SA-376) is generally identical)

This specification covers seamless austenitic stainless steel pipe intended for high temperature service. Among the 
grades covered are five H grades and two nitrogen grades that are specifically intended for high temperature service. All material is furnished in the heat treated condition unless waived and specifically marked ‘HT-O”. Hydrostatic tests are required for each length of pipe. Tension and flattening tests are required per lot.

ASTM A 409 (ASME SA-409 Is generally identical with some additional requirements)

This specification covers Schedule 5s and 10s straight-seam or spiral-seam welded stainless steel pipe intended for high temperature and general corrosive service. Production is normally limited to sizes of 14” through 30”, however, special diameters, lengths and alloys can be specified. Pipe manufactured to A 409 may be heat treated after welding, made from annealed plate and not heat treated after welding, or made from unannealed plate and not heat treated after welding. The principal manufacturing

procedures specified under A 409 are:

1. Either hydrostatìc. air or gas pressure testing per lot. 
2. Transverse guided-bend tests and transverse tension tests each length. MIL-P-1144

This specification covers seamless and welded austenitic stainless steel pipe intended for elevated temperature and general corrosive service, including cryogenic applications. This specification is approved for use by the Naval Sea Systems Command and is available for use by all Departments and Agencies of the Department of Defense. All pipe isto be furnished in the heat treated condition and subjected to nondestructive electric or hydrostatic pressure testas applicable. Tension, flattening and intergranular corrosion tests are required by lot.


Surface Finish/ Weld Bead/ Heat Treatment / Mechanical Properties / Specification

Difference between ASTM A249, A270, A269, and A554 Stainless steel tubing Download Pdf

Surface Finish

A249 and A269 both require Surfaces “free of scale” – annealing of the tube is normally done in a controlled atmosphere and this “bright annealed” finish is considered acceptable.

A270 requires selection of both internal and external Surfaces. The possible conditions range from a "mill finish" (i.e. the strip's 2B finish, without any subsequent polishing), to abrasive polishing with 80, 120, 180 or 240 grit, to special polishing and electropolishing. Surface finishes may also be specified in terms of Ra values, but no limits are given in the specification.

A554 requires only "free of scale" and implies a "direct off mill" finish as standard. Clause 11.2 does allow - "If special finishes are required, they shall be stated in the order". Thus a large proportion of A554 tube used in the Australian market is supplied in the externally polished or buffed conditions, in the range of about 180 - 320#, or with a very highly polished Surface, typically stated as 600#.

AS1528 specifies the external Surface "as produced" or "buff polished", as agreed. The internal Surface is required to be 2B finish, quoted as typically 0.3µm Ra. Work done by Neelcon Steel indicates that for 1.6mm 2B coil (the starting material for welded tube) the typical roughness is 0.10 - 0.20 µm Ra; this would be expected to not be significantly degraded in the manufacture of tube. With weld bead rolling it would be expected that the finish of the weld would be similar to that of the parent tube.

Weld Bead

The food industry generally requires a tube with no weld bead remnant on the inside Surface if the intended service is handling product.

A249 requires that at least the weld be cold worked after welding and before final heat treatment.

A269 does not require any weld bead control or cold working.

A270 makes no mention of weld bead.

A554 can be supplied with the weld bead left on, but in recent years Australasian manufacturers of As Welded tube have all made internal weld bead rolling a fairly routine procedure; this therefore complies with the "Bead Removed" option of A554. (Weld bead rolling is not generally possible in sizes below 31.8mm, although sizes down to 25.4 or even smaller can be hammer swaged if specifically ordered).

AS1528 requires removal of the weld bead (except in the small sizes where the procedure is not possible). There is also a requirement that the internal Surface be smooth, with no lack of weld penetration and no crevices adjacent to welds. This requirement addresses the heart of the issue - freedom from sites for product or bacterial build-up.

Heat Treatment

A249A269 and A270 all require that “all material shall be furnished in the heat treated condition”. Heat treatment is annealing (also referred to as solution treatment or solution annealing). In practice this is not a common requirement for food industry tube unless it requires significant bending or flaring.

A554 is normally supplied “as welded”, ie. no heat treatment after tube forming (although the tube will be produced from strip which has itself been annealed just prior to the final cold roll). There is the possibility of calling for A554 tube in the annealed condition, but this is never done - annealed tube (“As Welded Annealed” or AWA) is more usually specified to ASTM A269.

AS1528 allows either annealed or un-annealed conditions to be specified by the purchaser.

Mechanical Properties

A249 is intended for critical environments in boilers or heat exchangers, and hence extensive mechanical testing is required. Full tensile and hardness testing is standard, as are flattening, flange and reverse bend.

A269 requires no tensile testing, but does require hardness tests, plus flange, reverse flattening.

A270 requires a reverse flattening test only.

A554 requires no mechanical testing as standard.

AS1528 requires no tensile or hardness testing, but does require the tube to be made from strip compliant with ASTM A240 - which itself has tensile strength requirements.

Non-Destructive Inspection

A249A269A270 and AS1528.1 all require 100% hydrostatic or eddy current testing.

A554 includes the possibility of non-destructive testing as a supplementary requirement, but this is not usual for A554 tube.

Which Specification

ASTM A249 is written for a quite different application area. It does specify weld bead removal, but this requirement can be met from other standards, without unnecessarily calling up the stringent mechanical properties of A249. The annealing mandatory in A249 will also not be required in most food applications. A high cost option.

ASTM A269 again requires tube in the annealed condition. Conversely, it does not specify internal weld bead removal, which generally is a food industry requirement. A269’s main positive aspect is that it is frequently a stock item. It will prove uncompetitive against un-annealed tube.

ASTM A270 also has problems in that it requires the tube in the annealed condition, and says nothing about weld bead. The finish options available in this specification are very comprehensive. Usually request inner polish as well as outer Surfaces

ASTM A554 in its usual supply condition is intended for mechanical applications, not for pressure containment and not for sanitary use.

AS1528 is by far the safest option, and the most cost-effective. It is specifically directed at food industry applications, specifying the features necessary to ensure high integrity lines for hygienic applications without requiring high cost additional mechanical testing. Annealing is possible if required and Surface finishes can be further specified. Batch traceability marking (considered essential to validate many food and pharmaceutical plants) is mandatory. Another key benefit is the existence of matching specifications for associated tube fittings.

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Stainless Steel Tubing Application

Stainless Steel Seamless Pipes Application :

  • Chemical Industries
  • Petrochemical Industries
  • Refineries Plants
  • Fertilizers
  • Heat Exchangers
  • Condensers
  • General Piping
  • Pressure Vessels
  • Paper & Pulp Industries
  • Cement Industries
  • Pharmaceuticals
  • Dairy Industries
  • Food & Beverages
  • Pumps
  • Hydraulic Tubing
  • Architectural Furniture
  • Process Equipments
  • Oil & Gas Industries
  • Textile Industries
  • Engineering
  • Sugar Industries
  • Industrial Equipments
  • Machineries
  • Heat Exchangers
  • Instrumentations
  • Evaporators, Condensers
  • Automobiles
  • Construction
Stainless Steel Tubing Chemical Composition / Mechanical Properties / Physical Properties

ASTM A554 Chemical Composition

Specifications Of ASTM A554 Grade Tp316

ASTM

A312, A376,A358, A269, A249, A403, A182, A351

ASME

SA312, SA376, Pressure SA358,SA269, SA249,SA403, SA182, SA351

Chemical Composition as per Stainless Steel Tubes

Material

Stainless Steel Chemical Composition % Max

C

Mn

P

S

Si

Cr

Ni

Mo

NB

Nb

Ti

TP304

0.08

2.00

0.045

0.030

0.75

18.0-20.0

8.0-11.0

TP304H

0.04-0.10

2.00

0.040

0.030

0.75

18.0-20.0

8.0-11.0

TP304L

0.035

2.00

0.040

0.030

0.75

18.0-20.0

8.0-13.0

TP310S

0.08

2.00

0.045

0.030

0.75

24.0-26.0

19.0-22.0

0.75

TP310HCbN

0.04-0.10

2.00

0.030

0.030

0.75

24.0-26.0

17.0-23.0

0.15-0.35

0.20-0.60

TP316

0.08

2.00

0.040

0.030

0.75

16.0-18.0

11.0-14.0

2.00-3.00

TP316L

0.035

2.00

0.040

0.030

1.00

16.0-18.0

10.0-15.0

2.00-3.00

TP316H

0.04-0.10

2.00

0.040

0.030

0.75

16.0-18.0

11.0-14.0

2.00-3.00

TP321

0.08

2.00

0.040

0.030

0.75

17.0-20.0

9.0-13.0

5C-0.60

TP321H

0.04-0.10

2.00

0.040

0.030

0.75

17.0-20.0

9.0-13.0

4C-0.60

TP347

0.08

2.00

0.040

0.030

0.75

17.0-19.0

9.0-13.0

10xC-1.00

TP347H

0.04-0.10

2.00

0.040

0.030

0.75

17.0-20.0

9.0-13.0

8xC-1.00

Mechanical Properties as per Stainless Steel Tubes

Stainless Steel Mechanical Properties

Material

Heat Treatment

Temperure F (C) Min.

ASTM grain size NO.

Tensile Strength Ksi (MPa), Min.

Yield Strength Ksi (MPa), Min.

Elongation %, Min

Hardness

Brinell

Rockwell

TP304

Solution

1900 (1040)

75(515)

30(205)

35

192HBW/200HV

90HRB

TP304L

Solution

1900 (1040)

70(485)

25(170)

35

192HBW/200HV

90HRB

TP304H

Solution

1900 (1040)

7

75(515)

30(205)

35

192HBW/200HV

90HRB

TP310S

Solution

1900 (1040)

75(515)

30(205)

35

192HBW/200HV

90HRB

TP310HCbN

Solution

2000 (1110)

7

95(655)

43(295)

30

256HBW

100HRB

TP316

Solution

1900 (1040)

75(515)

30(205)

35

192HBW/200HV

90HRB

TP316L

Solution

1900 (1040)

70(485)

25(170)

35

192HBW/200HV

90HRB

TP316H

Solution

1900 (1040)

7

75(515)

30(205)

35

192HBW/200HV

90HRB

TP321

Solution

1900 (1040)

7

75(515)

30(205)

35

192HBW/200HV

90HRB

TP321H

Solution

2000(1100)

7

75(515)

30(205)

35

192HBW/200HV

90HRB

TP347

Solution

1900(1040)

75(515)

30(205)

35

192HBW/200HV

90HRB

TP347H

Solution

2000(1100)

7

75(515)

30(205)

35

192HBW/200HV

90HRB

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sch 5, sch 10S , sch 20 , sch 30 , sch 40S , sch 60 , sch 80S, sch 100, sch 120 Seamless Pipe Stockist & Distributors in Belgium, Sweden, Peru, Norway, Switzerland, Czechia, New Zealand, China, Portugal, Croatia, Venezuela, Greece, Bahrain, Jordan, Serbia, Tunisia, Paraguay, Austria, Ukraine, Iraq, Denmark, Kenya, Hungary, Estonia, Morocco, Kazakhstan, Bulgaria, Sri Lanka, Slovenia, Ecuador, Azerbaijan, Uzbekistan, Slovakia, Costa Rica, Myanmar (Burma), Bolivia, Lithuania, Bosnia & Herzegovina, Cyprus, Ghana, Macedonia, Turkmenistan, Mauritius, Tanzania, Belarus, Togo, Libya, Zambia, Mongolia, Trinidad & Tobago, Namibia, Yemen, El Salvador, Puerto Rico, Panama
Neelcon Steel Wholesale Various High Quality Stainless Steel Tubing in all shapes and sizes and with any specifications that the clients, More then 1500 Clients in India, United States, Canada, United Kingdom, United Arab Emirates, Iran, Singapore, Saudi Arabia, South Korea, Indonesia, Malaysia, Italy, Thailand, Germany, Australia, Mexico, Taiwan, Turkey, Pakistan, Spain, France, Brazil, Vietnam, Netherlands, Japan, Philippines, Kuwait, Poland, Qatar, Oman, Egypt, Colombia, Argentina, Nigeria, Finland, Ireland, South Africa, Russia, Bangladesh, Israel, Hong Kong, Chile, Algeria, Romania
Pipe Line Supplier
Oil Gas Tube Manufacturers
Oil Gas Tube Manufacturers
heat exchanger Tube Manufacturers
Oil Gas Tube Manufacturers