Seamless steel pipe
1. OD: 140-273mm
2. Thickness: 6-26mm
3. Material: Q345B/20#/10#/45#/J55/K55/API 5L. B/X42/X52/X60 X70, etc.
4. Standard: GB/T8162-1999, GB/T8163-1999, GB3087-1999, GB5310-1999, API5L, API 5CT
5. Applying fields: Offshore oil exploitation, vacuum distillation, three gorges, power station, west-east, chemical plant, etc.

The technical of seamless steel tube:
Steel smelting--refining--CCM--rolling billet--roling round bittlet and ccmround billet--billet inspection--billet saw and cut--billet heating--piercing--
A-R rolling billet--reheating--slight-stretch reduction--cooling--straightening--blow the dust--cutting ends--size examination--surface inspection--NDT--
Hydranlic test--drifting--marking--weighting--packing--warehousing--transport