Weifang Zhong Heng Chemical Co., Ltd.

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1. Common coupling and reducing coupling

This kind of collar up to the standard API Spec 11 b and SY/T5029-2006 requirements, main specifications have 5/8/3/4 (SM), 3/4/7/8 t (SM),
1/11/8 7/8/1 T (SM), T (SM) also can be customized according to user requirements

2. Two-way protection arc coupling

Two-way protection arc sucker rod coupling is the special shape of spray welding layer on the sucker rod coupling is 0.5 mm wear-resistant corrosion-resistant alloy antifriction layer, through a special surface treatment, spray welding layer ...

3. Preventing eccentric wear coupling

This kind of coupling based on the standard SY/T5029-2006 processing, main specifications: sm 5/8, 3/4 sm, sm 7/8, 1 sm

4. API sucker rod coupling

This kind of coupling on the basis of the American petroleum institute API Spec 11 b - 1998 standard of sucker rod processing, main specifications: sm 5/8, 3/4 sm, sm 7/8, 1 sm

5. Casing collar