Spiral steel pipes are made by steel coil, extrusion forming under the normal temperature, then taken the technology of double wire and double-faced submerged-arc welded.
During molding process of spiral welded steel pipe, steel plate has uniform deformation and light residual stress, thus the surface has no scratches. Spiral steel pipe has more flexible thicknesses and diameters, especially in making high-grade thick pipes with small or medium aperture, these techniques has incomparable advantages in satisfying your needs.
API 5L PSL1 spiral steel pipe certificate ISO9001-2008.API5L
PACKAGE details: in bundles case packing or bundle pack. Hexagonal bundles of max, two tags on each bundle, wrap in waterproof paper , PVC sleeve sackcloth with several steel strips.
1.chemical component analysis
2.Mechanical properties of pipe body, yield strength, mechanical properties of welding seam, bending test and metallographic.
3.Other test, hydrostatic test, x ray test, online offline ultrasonic test, flatting test, bending test, straightening and etc.
|The type of Pipe||Spiral Welded Steel Pipe|
|Materials||Q235A, Q235B, 10#, 20#, Q345(16Mn), L245(B), L290(X42), L320(X46), L360(X52), L390X56), L415(X60), L450(X65), L485(X70), L555(X80), L290NB/MB(X42N/M), L360NB/MB(X52N/M), L390NB/MB(X56N/M), 415NB/MB(X60N/M), L450MB(X65), L485MB(X70), L555MB(X80)|
|Packing detail||Plywood cases|
|Marking||According to the Clients’ requirement|
|Length||5.8M,6M,11.8M,12M-18M, 20M-23M or as customers requirements|
|Application||Spiral steel pipe is mainly used in public waterworks, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction etc.For liquid transportation, For gas transmission, For structure: piling, etc.|
CREDIT STEEL INDUSTRIAL has 4 factorys, which located in Tianjin city and Heibei province, boasts its more than 500 staffs; professional technicians more than 100 people; owned 12 advanced production lines, full of inspection equipments and supporting energy saving facilities.
The production process of straight seam steel pipe is relatively simple. The main production processes include high-frequency welding straight seam steel pipe and submerged arc welding straight seam steel pipe.