sa 333 seamless steel pipe
1.Grade: 20#,45#,16Mn, 27SiMn,25Mn
2.Standard: DIN, GB
3.Diameter:50-300mm
4.Thickkness:2-50mm
sa 333 seamless steel pipe
Product variety
Processing mode | Diameter | Length | Linearity | Precision | Roughness of inner hole |
Cold drawn | 50-300 | less than13.5M | 0.3-1.0 | H8-H10 | 0.8-1.6 |
Honing | 50-300 | less than 13.5M | 1000 | H8-H9 | 0.4-0.8 |
Cutting Rolling | 50-300 | less than7.5M | H8 | 0.4 |
Size tolerance
Inner diameter |
| warp of wall thickness | ||
H8 | H9 | H10 | ||
50-80 | +0.046 | +0.074 | +0.120 | ±5% |
80-120 | +0.054 | +0.087 | +0.140 | |
120-180 | +0.063 | +0.100 | +0.160 | |
180-250 | +0.072 | +0.115 | +0.185 | |
250-300 | +0.081 | +0.130 | +0.210 |
Product Name | Executive Standard | Specification Range (OD * WT) | Steel Kind / Steel Grade |
German Standards | |||
Cold drawn precision seamless steel tube | DIN2391/EN10305-1 | 50-300mm*2-50mm | St35/ St45/ St52 (E235/E255/E355) |
Precision cold drawn welded steel tube | DIN2393/EN10305-2 | 50-300mm *2-50mm | St34.2/ St37.2/ St44.2/ St52.3 (E235/E355) |
Seamless steel tubes for elevated temperature | DIN17175 | 50-300mm *2-50 mm | St35.8/ St45.8/ 17 Mn4 |
American Standards | |||
Seamless carbon steel tubes for high temperature | ASTM A106 | 0.6-7.48in.*0.039-0.708in. | A/B/C |
Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes | ASTM A179 | 1/2-3 in. | Low carbon steel |
Seamless high-pressure carbon steel boiler tubes | ASTM A192 | 1/2-7 in.* 0.085-1.000in. | Low carbon steel |
Seamless carbon and alloy steel for mechanical tubes | ASTM A519 | 0.6-7.48in.*0.039-0.708in. | Carbon steel / alloy steel |
Electric resistance welded carbon and alloy steel mechanical cold drawn tubes | ASTM A513-5 | 0.6-7.48in.*0.039-0.47in. | Carbon steel / alloy steel |
Japanese Standards | |||
Seamless steel tube for boiler and heat exchanger | JIS G 3461 | 12.7-76.2mm | STB35/STB52/STB42 |
Carbon steel tubes for machine structural purpose | JIS G 3445 | 16-190mm*1-18mm | STKM11A/STKM12A /STKM12B/STKM12C /STKM13B/STKM13C |
British Standards | |||
Seamless and welded steel tubes for auto mechanical and general engineer purpose | BS6323 | 16-190mm*1-18mm | CFS6/CFS7 CFS8/CFS3 CFS4/CFS5 |
Seamless steel tube for boiler and superheater | BS3059 | 16-190mm*1-18mm | CFS320/CFS360 /CFS410 |