spiral welded steel pipe

spiral welded steel pipe
1.high quality at pretty competitive price
2 specification:219*2.5-1820*16mm
3 standard: GB/T 9711.1
Spiral welded steel pipe
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:
W.T. tolerance: D less than 508, -12.5%t~+15.0%t
Dmore than or equal to 508, L175~L245 -10.0%t~+17.5%t
L290~L555 -8.0%t~+19.5%t
O.D. tolerance: D less than or equal to 273.1 -0.40~+1.59 D more than 323.9 -0.79~+2.38
11. Tensile strength: 375-460Mpa, 38-47 kg/mm²
Yield Point: 235Mpa, 24 kg/mm²
Elongation: 26 min
12. Surface treatment: black paint as rusty protect, spray painting, anticorrosion & insulation, oiling.
13. Ends: Beveled ends 30°-35°,
Root face:1.59±0.79
Square cut:≤1.59
14. Methods: Submerged Arc Welding
15. Test: Hydrostatic test.
Non-destructive inspection: 100% X-ray or 100% UT plus X-ray at both ends
16. Packing: in bundles, worthy of sea transportation
17. Payment term: irrevocable L/C at sight