1.Materials: GR.B, X42, X52, ST37, ST52, S235JR, S355JR, SS400, SGP, STP G370 etc.
2.Standard: API 5L, ASTM A53, A139, A515, A252, A672 etc.
3. Specification:
OD: 219.1mm-3000mm.
WT: 4mm – 25.4mm.
Length: 6m - 18m.
4. End: plastic cap in the both end, pipe clamp.
5. Surface：oiled, black painted or varnish, galvanized, 3PE, FBE, or other epoxy coating.
6. Inspection：hydrostatic testing, ultrasonic testing, X-ray inspection.
7. Application: bridges, construction, water, oil and chemical industry.
SSAW steel pipe is the raw material of strip coil, often temperature extrusion molding, automatic double-bmerged arc welding process made of spiral seam pipe. Spiral steel pipe will strip into the pipe unit, the multi-roll rolling, strip rolled up, forming a circular gap opening gap, adjust the squeeze roll reduction, the weld gap control in the 1 ~ 3mm, and make both ends of the weld flush.
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