1. ASTM A335 GR P22 Alloy Steel Pipe ASTM A335 GR P22 Alloy Steel Pipe Product Information Dimension External Diameter 6-1020 mm Wall Thickness 1-150 mm Length 5-12 m Standard ASTM, JIS, DIN, GB, EN, BS Steel Grade Level 1650Mn, 27SiMn, 40Cr, Cr5Mo, 12Cr1MoV, 12Cr1MovG, 15CrMo
    1. 25CrMo4 Alloy Steel Pipe Specification External Diameter 1/8-48 inches Wall Thickness SCHx5S-SCH160, STD, XS, XXS Length conventional length or in terms of requirements of customers Packing Mode provided with plastic cap and tied with steel strip into hexagonal bun
    1. ASTM Alloy PipeASTM Alloy Pipe The ASTM alloy pipe is the seamless type steel tube resistant to high temperature, low temperature and corrosion. It is extensively applied in the fields of petroleum, chemical industry, electric power and boiler. Specificat
 

Alloy Steel Pipe

The alloy steel pipe is much more excellent than the ordinary seamless steel tube in performance. On account of containing comparatively more Cr element, it is especially distinctive in resistance to high temperature, low temperature and corrosion performance, which other seamless steel tube cannot catch up. Therefore, the alloy steel tube has a wide application range in the fields of petroleum, chemical industry, electric power, boiler, etc.

Usage
1. The alloy steel pipe can be applied as the tube on the heating surface of low and medium pressure boiler whose working pressure is generally no greater than 5.88MPa and working temperature is below 450℃.
2. The product is also employed as the tube on the heating surface of high pressure boiler. The high pressure boiler often works with the pressure exceeding 9.8MPa and temperature ranging from 450℃ to 650℃.
3. The alloy steel tube is also used in other fields like economizer, superheater, reheater, petrochemical industry, etc.

Standard
GB/T8162 China National Standard
GB3087
GB5310
ASME SA210 Specification for American Boiler and Pressure Vessel
ASME SA213
DIN17175 German Industrial Standard
 

Main Steel Grade
20MnG, 25MnG, 15CrMoG, 35CrMo, 42CrMo, 12Cr2MoG, 12Cr1MoVG, 12Cr2MoWVTiB, 10Cr9Mo1VNb, 10CrMoAl, 9Cr5Mo, 9Cr18Mo, SA210A1, SA210C, SA213 T11, SA213 T12, SA213 T22, SA213 T23, SA213 T91, SA213 T92, ST45.8/Ⅲ, 15Mo3, 13CrMo44, 10CrMo910, etc.

Dimensional Tolerance
Cold Drawn Type External Diameter (mm) Allowable Deviation (mm) Wall Thickness (mm) Allowable Deviation (mm)
>30-50 ±0.3 >3-20 ±10% ±0.5%-1.5%
 
Mechanical Property
Standard Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness
GB3087 10 335-475 ≥195 ≥24 /
20 410-550 ≥245 ≥20 /  
GB5310 20G 410-550 ≥245 ≥24 /
20MnG ≥415 ≥240 ≥22 /  
25MnG ≥485 ≥275 ≥20 /  
15CrMoG 440-640 ≥235 ≥21 /  
12Cr2MoG 450-600 ≥280 ≥20 /  
12Cr1MoVG 470-640 ≥255 ≥21 /  
12Cr2MoWVTiB 540-735 ≥345 ≥18 /  
10Cr9Mo1VNb ≥585 ≥415 ≥20 /  
ASME SA210 SA210A-1 ≥415 ≥255 ≥30 ≤143HB
SA210C ≥485 ≥275 ≥30 ≤179HB  
ASME SA213 SA213 T11 ≥415 ≥205 ≥30 ≤163HB
SA213 T12 ≥415 ≥220 ≥30 ≤163HB  
SA213 T22 ≥415 ≥205 ≥30 ≤163HB  
SA213 T23 ≥510 ≥400 ≥20 ≤220HB  
SA213 T91 ≥585 ≥415 ≥20 ≤250HB  
SA213 T92 ≥620 ≥440 ≥20 ≤250HB  
DIN17175 ST45.8/Ⅲ 410-530 ≥255 ≥21 /
15Mo3 450-600 ≥270 ≥22 /  
13CrMo44 440-590 ≥290 ≥22 /  
10CrMo910 480-630 ≥280 ≥20 /  
 
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