Basic material: Steel alloy 40Cr ( AISI 5140, HRA 56-62) ; API SPEC 11B specification manufacture; Inside diameter: 27.43mm( error bound: 0~ + 0.25mm) ; Outside diameter: 41.3mm( error bound: ....
Yantai Yunsheng Petroleum Machine Accessories Co., Ltd produce API approved sucker rod couplings, including Spray Metal sucker rod coupling, class T sucker rod coupling, Sub OD sucker rod coupling, ....
Basic material: Steel alloy 40Cr ( HRA 56-62) ; API SPEC 11B specification manufacture; Inside diameter: 30.61mm( error bound: 0~ + 0.25mm) ; Outside diameter: 46.3mm( error bound: -0.25~ + 0....
Basic materials: Steel alloy 40Cr ( AISI 5140, HRA 56-62) ; API SPEC 11B specification manufacture; I.D.: 1 3/ 8 ( 34.93mm) O.D.: 2 3/ 16( 55.56mm) Length: 4 ( 101.3mm) Weight: 1.13kg....