Detailed Product Description

heat treatment, heat treatment for tubing, casing, coupling and other pipe fittings

1) coupling: 2-3/8"--4-1/2"  NU, heat treatment to N80Q, P110

                  2-3/8"--4-1/2"  EU, heat treatment to N80Q, P110

                  4-1/2"--13-3/8"  STC  heat treatment to L80, N80Q and P110

                  4-1/2"--13-3/8"  LTC  heat treatment to L80, N80Q and P110
                  4-1/2"--13-3/8"  BTC  heat treatment to L80, N80Q and P110

2)every couplilngs, fittings and steel products of heat treatment

3)Range of size:  OD: smaller than 270mm

                           Length shorter than 4.7m