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ASTM A334/A334M Seamless and Welded Carbon and Alloy-Steel Tubes for Low Temperature Service
ASME SA-334/SA-334M Seamless Cold Drawn Steel tubes/Steel pipes/Steel tubing/Round tubing
1.The Steel tubes covers several grades of mininum wall thickness steel tubes;Seamless tubes;welded tubes intended for use
at low temperatures.
2.The Steel pipes are made by seamless or automatic welding process with no addition of no of filler metal in the welding operation.
All tubes Normalized by heating to a uniform temperature of not less than 845℃ and cool in air or in the cooling chamber of
an atmosphere controlled furance.
3.Referenced ASTM and ASME Standards:
A999/A999m Specification for general requirements for alloy and Stainless Steel Pipes.
A370 test methods and definitions for mechanical testing of steel pipes products.
A450/A450M specification for carbon steel tubes,ferritic alloy tubes and austenitic alloy
steel tubes and stainless steel tubing.
E213 Practice for ultrasonic testing of metal pipe and round tubing
ASME B36.10 welded and seamless wrought steel pipes and Steel Tubes
E23 tube and pipe test method for impact testing of metallic tubing.
4.Steel tubes grade:A334 gr.1/A334 gr.3/A334 Gr.6/A334 Gr.7/A334 Gr.8/A334 Gr.9/A334 Gr.11
| Element | Compision, % | ||||||
| Gr1 | Gr3 | Gr6 | Gr7 | Gr8 | Gr9 | Gr11 | |
| C, max | 0.30 | 0.19 | 0.30 | 0.19 | 0.13 | 0.20 | 0.10 |
| Mn | 0.40-1.06 | 0.31-0.64 | 0.29-1.06 | 0.90 max | 0.90 max | 0.40-1.06 | 0.60 max |
| P, max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 |
| S, max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 |
| Si | - | 0.18-0.37 | 0.10 min | 0.13-0.32 | 0.13-0.32 | - | 0.35 max |
| Ni | - | 3.18-3.82 | - | 2.03-2.57 | 8.40-9.60 | 1.60-2.24 | 35.0-37.0 |
| Cr | - | - | - | - | - | - | 0.50 max |
| Cu | - | - | - | - | - | 0.75-1.25 | - |
| Co | - | - | - | - | - | - | 0.50 max |
| Mo | - | - | - | - | - | - | 0.50 max |
5.SA334 gr.6/SA334 Gr.1 Steel tubes pictures:
Tags: ASTM A334 Low Temperature Service Steel Tubes, Boiler Tubes, Steel Tubes,
Boiler Steel Tubes, ASTM A334 Gr6;SA334 gr.1 steel tubes;SA334 Gr.6 steel pipes;
seamless tubing;round tubes;