Properties of casing&tubing coupling:

The material of casing couplings is h40, j55, k55, m65, n80-1, n80q, l80, c95, t95 and p110 grade steel with high quality and good performance;

The outer diameter ranges from 55.88 mm to 141.3 mm;

The casing couplings thread patterns include short round thread, long round thread and buttress thread.

Application: used for connect 2 joints of tubing or casing

Size:

Tubing coupling : 1.8/9 - 4-1/2''

Casing couping:4-1/2'' - 13-3/8''

Pipe standard:

Api 5ct and 5b psl1/psl2 j55,k55,n80-1,n80-q,

Api 5ct and 5b psl1/psl2 j55,k55,n80-1,n80-q,

Api 5ct and 5b l80-1,c90, c95,t95, p110, q125

Surface: whole phosphating or inside phosphating and outside coating

Thread: nue, eue,stc, ltc, btc, xc,hydrill cs

Special service: sweet service, sour service, anti-h2s, nace mr0175/iso15156