With the rapid expansion in the global trade, standardization of various products has become an essential requirement. The standards given to various products significantly contributes towards increasing international trade which in turn bridges the quality gap between the manufacturers, producers and buyers of different nations.
Standards and industry go hand in hand. You can’t have one without the other.
Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the process in the transport and use of chemical or electrochemical corrosion reaction of steel pipe.
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications.
ASTM A335/ASME SA335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service
ASTM A519 specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.
This part of EN1026 specifies the technical delivery conditions in two test categories for seamless tubes for circular cross section
EN 10305 European standard specifies the technical delivery conditions for seamless cold drawn steel pipe of circular cross-section used in hydraulic and pneumatic power systems.
It can also be used for structural applications; hollow pipe is far stiffer per unit weight than solid members. Seamless pipe is thought to be able to withstand higher pressure, higher temperatures, higher mechanical stress and a corrosive atmosphere. It can be found in a wide range of applications such as in oil and gas, refinery, petrochemical, chemical, fertilizer, power, automotive, bearing, mechanical and structural.
The production of our seamless pipes is tightly regulated and all of the pipes we stock have been fully tested to international standards to ensure we only supply the highest quality products.
| API Spec 5CT | API Spec 5L | ASTM/ASME | GS/ DIN | JIS |
We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanical, construction.
Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells.
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
|---|---|---|---|
| Casting | API 5CT | 114-219 x 5.2-22.2 | J55, K55, N80, L80, P110 |
| Tubing | API 5CT | 48.3-114.3 x 3.2-16 | J55, K55, N80, L80, H40 |
| Casting | API 5L | 10.3-1200 x1.0-120 | A, B, X42, X46, X52, PSL1 / PSL2 |
American Society for Testing and Materials(ASTM), American Society of Mechanical Engineers (ASME)
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
|---|---|---|---|
| Black and Hot-dipped Zinc-coated Steel Pipes Seamless | ASTM A53 | 0.3-1200 x 1.0-150 | GR.A, GR.B, GR.C |
| Seamless Carbon Steel for High Temperature Service | ASTM A106 | 10.3-1200 x 1.0-150 | GR.B, GR.C |
| Seamless Cold-drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes | ASTM A179 | 10.3-426 x 1.0-36 | Low Carbon Steel |
| Seamless Carbon Steel Boiler Tubes for High Pressure | ASTM A192 | 10.3-426 x 1.0-36 | Low Carbon Steel |
| Seamless Cold-drawn Intermediate Alloy Steel Heat-exchanger and Condenser Tubes | ASTM A199 | 10.3-426 x 1.0-36 | T5, T22 |
| Seamless Medium-carbon Steel Boiler and Superheater Tubes | ASTM A210 | 10.3-426 x 1.0-36 | A1, C |
| Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-exchanger Tubes | ASTM A213 | 10.3-426 x 1.0-36 | T5, T5b, T9 , T11, T22 ,T91 |
| Seamless Carbon and Alloy Steel for Mechanical Tubing | ASTM A333 | 1/4"-42" x SCH20-XXS | Grade1 Gr. 3,Gr..6, Gr.8 , Gr. 9 |
| Seamless Cold-drawn Carbon Steel Feedwater Heater Tubes | ASTM A556 | 10.3-426 x 1.0-36 | A2, B2 |
| For seamless ferritic alloy-steel pipe for high-temperature service | ASTM A335 | 1/4"-42" x SCH20-XXS | A/SA 335 P1, P2, P11, P12, P15, P22, P91, P92, P122 |
Germany Safety(GS), Deutsches Institut für Normung(DIN)
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
|---|---|---|---|
| Seamless Steel Tubes for Elevated Temperature | DIN 17175 | 10-762 x 1.0-120 | St35.8,St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36 |
| Seamless Circular Tubes of Non Alloys Steels with Special Quality Requirements. | DIN 1629 | 13.5-762 x 1.8-120 | St37.0, St44.0, St52.0 |
| Seamless steel tubes for pressure purposes | EN 10216 | 4.0-60.0 x 0.5-8 5-7 m manufacturing lenght |
P235GH TC1, P235GH TC2, 16Mo3 |
| hydraulic and pneumatic power system, low-voltage circuit, power steering, fuel circuit, vibration reduction, and such. | EN 10305 | 13.5-165.1 x 1.8-4.85 | St33.2 |
| specifies the Seamless steel tubes used forMechanical and Automobile. | DIN 2391 | 4.0-60.0 x 0.5-8 | St35, St45, St52 |
| Seamless Steel Tubes | DIN 2440 | 13.5-165.1 x 1.8-4.85 | St33.2 |
Japanese Industrial Standards (JIS) specifies the standards used for industrial activities in Japan.
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
|---|---|---|---|
| High pressure and high temperature service | JIS G3454/5/6 | 19.05-114.3 x 2.0-14 | JIS G3454(STPG370, STPG410), JIS G3455(STS370, STS410, STS480), JIS G3456(STPT370, STPT410, STPT480) |
| Tubes used for machinery, automobiles, bicycles, furniture, appliances and other machine parts. | JIS G3445 | 19.05-114.3 x 2.0-14 | STKM11A, STKM12(A,B,C), STKM13(A,B,C), STKM14(A,B,C). |
| Carbon steel/Alloy steel boiler and heat exchanger tubes | JIS G3461,2 | 19.05-114.3 x 2.0-14 | G3461(STB340, STB410, STB510) G3462(STBA22, STBA23) |
| Seamless steel tubes for high pressure gas cylinder | JIS G3429 | 19.05-114.3 x 2.0-14 Length: max 16000mm |
STH11, STH12, STH21, STH22 |
| Heat resistant alloy steel pipes that are used for high temperature conveying fluid pipes for heaters and boiler tubes. | JIS G3458 | 10.5-660.4 mm | STPA 12, STPA 20, STPA 22, STPA 23, STPA 24, STPA 25, STPA 26 |
| Product name | Executive standard | Dimension (mm) | Steel code/ Steel grade |
|---|---|---|---|
| Used for manufacturing various low and medium pressure boilers. | GB 3087 | 19.05-114.3 x 2.0-14 | 10#, 20# |
| Low-temperature heat exchanger tubes seamless steel pipe | GB/T18984 | 19.05-351 x 2.0-14 | 06Ni3MoDG, 09DG, 09Mn2VDG, 10MnDG, 16MnDG |
| GB 8163 steel pipe is a seamless steel pipe for fluid transportation (GB/T8163-2018) | GB/T 8163 | 19.05-351 x 2.0-14 | 10# |
| High pressure and above pressure steam boiler tubes with high quality carbon structural. | GB5310 | 19.05-114.3 x 2.0-14 | 20G, 20MnG, 25MnG, 15MoG, 20MoG, 12CrMoG, 15CrMoG(T12/P12), 12CrMoG, 12Cr2MoWVTiB. |
Also known as "marine grade" stainless steel due to its increased ability to resist saltwater corrosion compared to type 304. SS316 is often used for building nuclear reprocessing plants.
304 Stainless is a low carbon (0.08% max) version of basic 18-8 also known as 302.
Type 316 is more resistant to atmospheric and other mild environments than Type 304.
310S Stainless Steel has excellent resistance to oxidation under constant temperatures to 2000°F.
317L is a molybdenum bearing austenitic chromium nickel steel similar to type 316, except the alloy content in 317L is somewhat higher.
Type 321 is basic type 304 modified by adding titanium in an amount at least 5 times the carbon plus nitrogen contents.
Type 410 is a martensitic stainless steel which is magnetic, resists corrosion in mild environents and has fairly good ductility.
Duplex 2205 (UNS S31803), or Avesta Sheffield 2205 is a ferritic-austenitic stainless steel.
Duplex 2507 (UNS S32750) is a super duplex stainless steel with 25% chromium, 4% molybdenum..
UNS S32760 is described as a super duplex stainless with a microstructure of 50:50 austenite and ferrite.
ASTM A269 / A269M Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
ASME SA 249 Standard Specification for Welded Austenitic Steel Boiler,
Superheater, Heat-Exchanger, and Condenser Tubes.
904L stainless steel consists of chromium, nickel, molybdenum and copper contents, these elements give type 904L stainless steel excellent properties
A Mill Test Certificate (MTC), or Mill Test Report (MTR), is issued by a manufacturer to certify the chemical and mechanical features of a product and its compliance to the applicable norms and technical specifications. Typically, Mill Test Certificates conform to the EN 10204 standard and are related to steel products.
A mill test certificate to EN 10204 shows, generally, the following information:
Mill Test Certificate denomination in…
| MTC Type EN 10204 | English | German | French | Scope | MTC to be validated by… |
| MTC Type 2.1 | Declaration of compliance with the order | Werk- | Attestation de conformité á la Commande | Statement of compliance with the order | The manufacturer |
| Bescheinigung | |||||
| MTC Type 2.2 | Test report | Werkzeugnisse | Relvé de contrôle | Statement of compliance with the order by the manufacturer based on non-specific inspections (tests) by the manufacturer. | The manufacturer |
| MTC Type 3.1 | Inspection certificate 3.1 | Abnahmeprüf-Zeugnisse 3.1 | Certificat de réception 3.1 | Statement of compliance with the order by the manufacturer with results of a specific inspection | The manufacturer`s authorized inspection representative, independent by the manufacturing department |
| MTC Type 3.2 | Inspection certificate 3.2 | Abnahmeprüf-zeugnisse 3.2 | Certificat de réception 3.2 | Statement of compliance with the order with an indication of results of a specific inspection | The manufacturer`s authorized inspection representative independent by the manufacturing department |
| Either the purchaser`s authorized inspection representative or a third-party inspector |
| Certificate type | Title | Summary of EN10204 requirements | Notes |
| 3.1 | Inspection certificate | Statement of compliance with the order by the manufacturer with results of specific inspection | Replaces 3.1B. Common certificate type issued for ‘batch tested’ material. Cert. issued and signed by the manufacturer’s representative, who must be independent of the manufacturing department. Eg Inspection department or test house manager/supervisor. |
| 3.1A | Inspection certificate 3.1A | With a mention of test results from specific inspection and testing | Batch test results. Cert. issued by independent inspector required by releasing authority (eg TUV for German pressure vessels). Replaced by 3.2 in 2004 |
| 3.1B | Inspection certificate 3.1B | With a mention of test results from specific inspection and testing | Batch test results. Cert. issued and signed by the manufacturer’s representative. Replaced by 3.1 in 2004 |
| 3.1C | Inspection certificate 3.1C | With a mention of test results from specific inspection and testing | Batch test results. Cert. issued by an independent inspector appointed by a customer (eg Lloyds). Replaced by 3.2 in 2004 |
Even welding and smooth weld line, can be substitute for seamless tube after drawing and cold rolling.
This Standard covers overall dimensions, tolerances, ratings, testing, and markings for wrought factory-made buttwelding fittings in sizes NPS 1 ⁄ 2 through 48 (DN 15 through 1200).
Fittings may be made to special dimensions, sizes, shapes, and tolerances by agreement between the manufacturer and the purchaser.
ASTM A234/ SA234M Standard specification for pipe fittings of wrought carbon steel and alloy steel for moderate and high temperature service.
These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures.
The ASME - American Society of Mechanical Engineers - ASME/ANSI B16 Standards covers pipes and fittings in cast iron , cast bronze, wrought copper and steel.
AWWA standards evaluate properties that particularly affect potable water use, as opposed to broader industrial flange applications.
ANSI-approved flanges are used for the industrial market which handles gas, air and steam process systems.
ASTM A420/A420M-07 Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service.
ASTM A403 / A403M Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings.
MSS SP-97 Standard Practice covers essential dimensions, finish, tolerances, testing, marking, material
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