370L/420L/440L/510L/550L/610L/700L/750L/800L steel of the cold bent round weld steel pipe

Specification Range:   30 - 325mm  wall thickness : 1.5-12

Main materials: Carbon Steel     

Q235B/C/D/E, Q345B/C/D/E, Q390C/D/E, Q420C/D/E, Q550C/D/E, Q690C/D/E, 370L/420L/440L/510L/550L/610L/700L/750L/800L

QSTE380700 series; S355-960MC series;

Weathering steel and other domestic and foreign types

Technical standard:  GB/T6725, GB/T 6728, GB/T 26080, etc.

Delivery status:Cold bending, weld heat treatment, overall heat treatment (annealing,normalizing,tempering)

Product features:  cold drawing after weld removal is adopted to meet the requirment of use and reduce the  cost