Features: 

1) Material: carbon steel,seamless steel,stainless steel 

2) Hot-dipped galvanized or electrical galvanized and black, also Powder coating as customer’s request. 

3) Sockets are available in full sockets, half sockets and Special sockets. Customers’ drawings or designs are available.

4) Standard according to BS EN10241, ASTM A 865,DIN 2986, the thread refers to internal parallel thread.