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weifang,Weifang,Shandong,China China
Our products are and are only Class T or SM couplings.The couplings are not only special in oilfield but also with high quality and ultralow price.
1.)material :40Cr or other2.)standard: API SPEC11B 3.)Feature: 1.Coat Thickness( in ): 0.01in-0.02in 2. Surface hardness: HRC56-62 Basic ha
1.)material :40Cr or other(according to demand) AISI5140 2.)standard: API SPEC11B 3.)Feature: 1.Coat Thickness( in ): 0.01in-0.02in 2. Surfac
1.)material :40Cr or other 2.)standard: API SPEC11B 3.)Feature: 1.Coat Thickness( in ): 0.01in-0.02in 2. Surface hardness: HRC56-62 Basi
Persona de contacto zhang james
Dirección weifang, Weifang, Shandong
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