Material specifications

Our highly-skilled manpower is dedicated to producing the finest quality steel pipe, pipe fittings, meeting a wide variety of material specifications. Their knowledge and experience of metal properties, welding procedures and quality control have set the pace and standard expected by our customers world-wide.

Commonly fabricated materials and specifications are:


Alloy steel

Alloy steel is often subdivided into two groups: high alloy steels and low alloy steels. The difference between the two is defined somewhat arbitrarily. However, most agree that any steel that is alloyed with more than eight percent of its weight being other elements beside iron and carbon, is high alloy steel.

Available standard and specification as below:
ASTM / ASME

(ASTM), American Society of Mechanical Engineers (ASME)

Product name Executive standard Dimension (mm) Steel code/ Steel grade
Seamless Ferritic and Austentic Alloy Steel Boiler, Superheater and Heat-Exchanger Tubes ASTM A213 / A213M 10.3~426 x 1.0~36 T5, T9, T11, T12, T22, T91
Wall seamless and welded carbon and intended for use at low temperatures ASTM A333/ASME SA333 Standard Specification 1/4″~42″ x SCH20~XXS Gr1, Gr3, Gr6
Seamless Ferritic Alloy Steel Pipe for High-Temperature Service ASTM A335/ ASME SA335 1/4″~4″ x SCH20~SCH80 P5, P9, P11, P12, P22, P91, P92
Seamless Carbon and Alloy Steel for Mechanical Tubing ASTM A519 16″~42″ x 10~100mm 4130, 4130X, 4140
EN
Product name Executive standard Dimension (mm) Steel code/ Steel grade
Seamless Ferritic for High Temperature Use EN 10216-2 8″~42″ x 15~100mm 13CrMo4-5, 1-CrMo9-10, X10CrMoVNb9-1, 15NiCuMoNb5-6-4

Stainless Steel

There are different types of stainless steels: when nickel, for instance is added the austenite structure of iron is stabilized.

Types of stainless steel

when nickel, for instance is added the austenite structure of iron is stabilized.

The main elements in stainless steel

Stainless steel or corrosion-resistant steel is a kind of metallic alloy that is found in a variety of forms.

History of stainless steel

‘Stainless’ is a term coined early in the development of these steels for cutlery applications.

Stainless Pipes are made from more than 20 steel grades of various corrosion resistance and are intended for application in conditions of a wide range of corrosion environments and temperatures in heat exchanger.
What is stainless steel?
This crystal structure makes such steels non-magnetic and less brittle at low temperatures. For higher hardness and strength, carbon is added. When subjected to adequate heat treatment these steels are used as razor blades, cutlery, tools etc.

Significant quantities of manganese have been used in many stainless steel compositions. Manganese preserves an austenitic structure in the steel as does nickel, but at a lower cost.Stainless steel does not readily corrode, rust or stain with water as ordinary steel does, but despite the name it is not fully stain-proof, most notably under low oxygen, high salinity, or poor circulation environments. It is also called corrosion-resistant steel or CRES when the alloy type and grade are not detailed, particularly in the aviation industry.


Carbon Steel

Carbon steel is steel where the main interstitial alloying constituent is carbon in the range of 0.12-2.0%.

Higher carbon steels

which can successfully undergo heat-treatment have a carbon content in the range of 0.30–1.70% by weight.


Ultra-high carbon steel

Ultra-high carbon steel contains between 1 and 2 percent carbon.


Medium Carbon Steel

Medium Carbon Steel contains between 0.25 -0.7% carbon and used for machine components requiring high strength and good fatigue resistance.


ASTM A350 LF2 Carbon Steel

-LF2 Temperature range (-50 to 800 deg. F) Where corrosion resistance is not important.

The Effect of Welding on High Carbon Steel

High-carbon steels are decidedly more difficult to weld than low- or medium-carbon steels. However, a variety of measures are available to ensure a strong weld.

Difference between forged steel and carbon steel?

Forged steel has been subject to high temperature and pressure forcing the crystal structure closer together and increasing tensile strength (used in high pressure gas compressors).


Difference between carbon steel and Killed carbon steel

There is a difference between regular carbon steel and killed carbon steel.

How to use steel tubing and use carbon steel pipe

If you are interested in using carbon steel pipe, there are all different types of reasons why you will want to use this.


Killed Carbon Steel

Killed Carbon Steel is a process of deoxidation that is performed during the steel making process.


Designation of Carbon Steel

The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values.


Carbon Steel Coding

The AISI and the SAE have designed a four digit code to assign to all carbon and alloy steels to show its standard wrought steel composition.


Which difference betweem astm a53 and astm a106

Pressure (psig) and temperature (deg F) ratings of carbon steel pipes – temperatures ranging 100 oF – 750 oF


High Carbon Steel Properties

High Carbon Steel is one of the most important construction metals in the world.


What is Carbon steel?

Carbon steel is steel in which the main interstitial alloying constituent is carbon in the range of 0.12–2.0%.

The usage of Carbon steel pipe

Carbon steel pipe is widely used in the world of manufacturing as they have high end durability. It is one of the preferred pipes when it comes to stamina and cost. Steel tubes of different sizes and shapes can be created with use of modern technology.

ASTM Seamless pipe

DIN/EN Steel Pipe

DIN (Deutsches Institut für Normung ) standards for topics varying from agriculture to vehicle manufacturing in Germany.

JIS seamless pipe

JIS seamless pipe is steel pipe that has been created by JIS and meets certain performance requirements.

API SPEC 5L -Specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.

Product name Executive standard Dimension (mm) Steel code/ Steel grade
Casting API 5L 10.3~1200 x1.0~120 A, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2


ASTM / ASME  
– American Society for Testing and Materials / American Society of Mechanical Engineers

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, T9, T11, T12, T22, T91
Seamless Carbon and Alloy Steel for Mechanical Tubing 1/4″~42″ x SCH20~XXS Gr1, Gr3, Gr6
Seamless and Welded Carbon Steel Pipes and Alloy Steel Pipes for Low Temperature Use ASTM A334 1/4″~4″ x SCH20~SCH80 Gr1, Gr6
Seamless Cold-drawn Carbon Steel Feedwater Heater Tubes ASTM A556 10.3~426 x 1.0~36 A2, B2

GS

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 Steel Tubes
DIN 1629 / DIN 2391
13.5~762 x 1.8~120
St37.0, St44.0, St52.0, St52.3
Seamless Steel Tubes
DIN 2440
13.5~165.1 x 1.8~4.85
St33.2
Seamless Steel Pipes for Structural Purpose
DIN 2393
16~426 x 1.0~36
RSt34-2, RSt37-2, RSt44-2,St52

GS/ DIN– German Institute for Standardization, develops norms and standards as a service to industry, the state and society as a whole.

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 Steel Tubes DIN 1629 13.5~762 x 1.8~120 St37.0, St44.0, St52.0
Seamless Precision Steel Tube 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

Black steel

Black steel is a term given to steel pipe with a black oxide scale on the surface. This black oxide scale is formed when the pipe is forged and is typically sealed with a protective oil to prevent corrosion. Because of this oxide scale and protective film, black steel pipe requires little maintenance and is used for a wide variety of applications, including in water, steam, air and gas services. Black steel pipes are typically cut and threaded in the field.

High-yield low temperature

MSS-SP-75, CSA 245, ASTM A-st420, ASTM A-860, ASTM A-234 & ASME SA-234 Tees & reducing tees, WPB, API 5L, API 5CT, ASTM A53, A106, A120, A161, A179, A192, A199, A200, A210, A261, A333, A335, A376, A671, A672, A691 JIS G3461, JIS G3462, STS 480, DIN 17175, DIN 1629, DIN 17121, BS 2059,WPC Duplex and super duplex
ASTM A-815 & ASME SA-815, UNS 31803, UNS 32750, UNS 32760, UNS 32755, UNS-S 32550


Abrasion resistant pipe

Abrasion resistant pipe applied in coal-fired power plant ash and slag discharge tube, powder, powder tube, desulfurization pipeline,in addition also widely used in the following industries:

  • After Analyses and research, it was thought that the main facts which affect drilling pipe abrasion resistant ring failure were abrasive property of formations, selection of high-abrasive material, and wielding technique.
  • Mining coal industry, coal, coal mines, washing filling, coal mine,
  • Metal mine ore tailings transport, and wear-resistant elbow,
  • Metallurgy furnace of steel, coal, iron pipe; such loss CAO, zinc Bei sand conveying pipeline steel, alloy , the secondary refining etc; the selection of wear-resisting elbow.

Ceramic (Corundum: a-Al2O3) lined abrasion resistant straight pipe and fittings are lined with highly abrasion resistant ceramic by SHS ——-Self-propagating High-temperature Synthetic process. The composite pipes have good corrosion-resistant.


How better packaging the abrasion resistant pipe

There are probably hundreds of different methods for packing a abrasion resistant pipe and Elbows, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.
Recommended Abrasion resistant pipe as below:After Analyses and research, it was thought that the main facts which affect drilling pipe abrasion resistant ring failure were abrasive property of formations, selection of high-abrasive material, and wielding technique.

Main Properties of Ceramic lined pipe
Sand injection test 30% Transfer test of sludge with SiO2
Material Volume diminution (cm3) Material Volume diminution (cm3)
Ceamic lining Steel pipe 0.0022 Ceamic lining Steel pipe 3
Ceramic pipe Al2O397% 0.0025 S45C 25
Properties of the Ceramic-lined Steel Composite Pipes

Ceramic (Corundum: a-Al2O3) lined abrasion resistant straight pipe and fittings are lined with highly abrasion resistant ceramic by SHS ——-Self-propagating High-temperature Synthetic process.

Note:

This inventory is part of the inventory, demand and other models in stock or order materials, please contact us.