We are offering sucker rod coupling. 1.)material :40cr or other 2.)standard: api spec11b 3.)feature: 1.coat thickness( in ): 0.01in-0.02in 2. Surface hardness: hrc56-62 basic hardness：hra56-62 3.life: > 180days 4.min. Tensile strength: 655 mpa 5....
We are offering api 11b sucker rod and coupling. specifications : api spec 11b, sy/t5029 standard. 2.meet oilfield hl, hy, kd, grade d etc. 3.high-tenacity, high toughness, corrosion resistan....
Shangkou Town Shou Guang City Shandong Province , China
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14 Years
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