pup joints:
Our company can provide any type of pub joints using the same material as our drill collars. All connections are phosphate coated to improve resistance to corrosion. Standard lengths are 5 ft,10 ft, 15ft, and 20ft. Additional sizes are available upon request. Pub joints have the same properties in tensile, yield and torsional strength as compared with S-135 which has the same ID. All products are conformed with API Specification.
Lift subs and lift plugs:
Rotary subs are available in standard lengths of 36"or 48". Rotary subs are manufactured from drill collar material trepanned and drifted to API Spec 7 requirements, including kelly saver subs, straight OD subs and reduced section.
Address: 045499, People`s republic of China, No.114 Chaoyang West Street, Shouyang county, Jinzhong city,Shanxi Province.
Tel: +86(354) 4602448/919 Fax: +86(354) 4602 431 E-mail: hj@huanjie. com. cn / gongjinwu@huanjie. com. cn