Product: Seamless Steel Pipe
OD: 1/8” ~ 48” (10.3 ~ 1219mm)
WT: SCH 10 ~ 160, SCH STD, SCH XS, SCH XXS
LENGTH: Fixed Length (5.8/6/11.8/12mtr), SRL, DRL
Standard & Grade: ASTM A106, Grade A/B/C
Ends: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
Surface: Bare, Lightly Oiled, Black/Red/Yellow Painting, Zinc/Anti-corrosive Coating
This specification covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. The pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their micro-structure. Tensile tests, impact tests, hydro-static tests, and nondestructive electric tests shall be made in accordance to specified requirements.
1. Scope
1.1 This specification covers nominal (average) wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. Several grades of ferric steel are included as listed in Table 1. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.
1.2 Supplementary Requirement S1 of an optional nature is provided. This shall apply only when specified by the purchaser.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in non-conformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
Seamless Steel Pipe Chemical Composition and Mechanical Properties
This data is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
| Standard | Grade | Chemical Composition (%) | Mechanical Properties | ||||||
| ASTM A53 | C | Si | Mn | P | S | Tensile STrength(Mpa) | Yield STrength(Mpa) | ||
| A | ≤0.25 | – | ≤0.95 | ≤0.05 | ≤0.06 | ≥330 | ≥205 | ||
| B | ≤0.30 | – | ≤1.2 | ≤0.05 | ≤0.06 | ≥415 | ≥240 | ||
| ASTM A106 | A | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥415 | ≥240 | |
| B | ≤0.35 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥485 | ≥275 | ||
| ASTM A179 | A179 | 0.06-0.18 | – | 0.27-0.63 | ≤0.035 | ≤0.035 | ≥325 | ≥180 | |
| ASTM A192 | A192 | 0.06-0.18 | ≤0.25 | 0.27-0.63 | ≤0.035 | ≤0.035 | ≥325 | ≥180 | |
| API 5L PSL1 | A | 0.22 | – | 0.90 | 0.030 | 0.030 | ≥331 | ≥207 | |
| B | 0.28 | – | 1.20 | 0.030 | 0.030 | ≥414 | ≥241 | ||
| X42 | 0.28 | – | 1.30 | 0.030 | 0.030 | ≥414 | ≥290 | ||
| X46 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥434 | ≥317 | ||
| X52 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥455 | ≥359 | ||
| X56 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥490 | ≥386 | ||
| X60 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥517 | ≥448 | ||
| X65 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥531 | ≥448 | ||
| X70 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥565 | ≥483 | ||
| API 5L PSL2 | B | 0.24 | – | 1.20 | 0.025 | 0.015 | ≥414 | ≥241 | |
| X42 | 0.24 | – | 1.30 | 0.025 | 0.015 | ≥414 | ≥290 | ||
| X46 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥434 | ≥317 | ||
| X52 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥455 | ≥359 | ||
| X56 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥490 | ≥386 | ||
| X60 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥517 | ≥414 | ||
| X65 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥531 | ≥448 | ||
| X70 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥565 | ≥483 | ||
| X80 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥621 | ≥552 | ||
Carbon Steel Seamless Pipe Chemical Composition and Mechanical Properties
| Standard | Grade | Chemical Composition | Mechanical Properties | |||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) | ||
| GB/T8163 | 10 | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.25 | ≤0.25 | 335-457 | ≥205 | ≥24 |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 | 410-550 | ≥245 | ≥20 | |
| Q345 | 0.12-0.20 | 0.20-0.55 | 1.20-1.60 | ≤0.045 | ≤0.045 | – | – | – | 490-665 | ≥325 | ≥21 | |
Carbon Steel Seamless Pipe Tolerance
| Pipe types | Pipe Szie(mm) | Tolerances | |
| Hot rolled | OD | All | ±1% (min ±0.50mm) |
| WT | All | +15%, -12.5% | |
| Cold drawn | OD | 6～10 | ±0.20mm |
| 10～30 | ±0.40mm | ||
| 30～50 | ±0.45mm | ||
| >50 | ±1% | ||
| WT | ≤1 | ±0.15mm | |
| >1～3 | +15% -10% | ||
| >3 | +12.5% -10% | ||
Seamless Steel Pipe End
| Plain End | Wall Thickness less than 0.5 inch, including SCH STD & SCH XS |
| Plain End (Square Cut) | Wall Thickness over 0.5 inch, including SCH XXS |
| Beveled End | Wall Thickness less than 0.5 inch, including SCH STD & SCH XS |
| Couplings | Outside Diameter equal or less than 2” |
| Thread Protection | Outside Diameter over 4 inch |
