Threaded Couplings

We are offering threaded couplings x-over n80 eu 4-12"*3-12"eu threaded couppings standard reference: api spec 5ct size: from 2 38" to 4-12'' grade: j55, k55, n80-1, n80-q, l80, p110 n80 type: nu, eu thread type: tubing round thread. Dimensions and their tolerances of tubing round-thread as per api spec 5b surface treatment: coating protection of thread: thread protector packing: by wooden case, wooden pallet, or by the requirements of customers.