spiral steel pipe

spiral steel pipe
1 standard:2.5-18*219-2020mm
2 certificate: ISO
3 material Q235, Q345B
4 length:12m or customized
spiral steel pipe
1 standard:2.5-18*219-2020mm
2 certificate: ISO
3 material Q235, Q345B
4 length:12m or customized
Spiral steel pipe
O.D. 219-1820mm(8”-72”)
DN200-DN1800
W.T. 2.5-16mm
Length: 6-12m Random, 12m fixed.
Material:Q235B, Q215A B, 16Mn(Q345), X42, X52, X56, X60, X65, X70, L245, L290, L360.
Application: applied for structure and low pressure fluid service.
Standard: GB/T9711.1-1997
Chemical composition:
Tensile strength: 375-460Mpa, 38-47 kg/mm²
Yield Point: 235Mpa, 24 kg/mm²
Elongation: 26 min
10. Surface treatment: black paint as rusty protect, spray painting, anticorrosion & insulation, oiling.
11. Ends: Beveled ends 30°-35°,
Root face:1.59±0.79
Square cut: less than or equal to 1.59
12. Methods: Submerged Arc Welding
13. Test: Hydrostatic test.
Non-destructive inspection: 100% X-ray or 100% UT plus X-ray at both ends
14. Packing: in bundles, worthy of sea transportation
15. Payment term: irrevocable L/C at sight or T/T