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Page Views: 250 Date Added: 05/26/2009 Last Updated: 06/19/2009 Expiry Date: 05/22/2028 Product/Service Details 1）Type: SM including Full Size coupling and Slim Hole coupling 2）Material: Carbon steel AISI 5I40（40Cr） or AISI 4135（35CrMo） 3)Basic Hardness: HRC 16-23 4）Surface Hardness: HRC 50-65 5）Hole rate: ＜2% 6）Min. Hardness of the layer: 595HV0.2 7）Standard: API Spec 11B 8）coupling diameter: 5/8 ",3/4",7/8",1",1-1/8" 9)Weight:0.41- 1.10KG/PCS 10)Package: wooden cases 11)Payment Terms: T/T ， L/C Additional photos SM couplings SM coupling2 SM couplings with big chamfer silvercouplings

Company Information (Yantai Yunsheng Petroleum Machine Fittings Co.,Ltd.)

Company Profile: Yantai Yunsheng Petroleum Machine Fittings Co., Ltd. is a modern high-tech enterprise specialized in manufacturing petroleum machine accessories--sucker rod coupling . The company can itself research and develop to produce the Deflection-proof and Abrasion-proof Sucker Rod Coupling，Common Coupling and Sub couplings,which have passed the ISO9001 and API SPEC11B Quality Management System Certifications，Industrial Production Permit of China，and Import& Export Licence. The excellent value for money makes Yunsheng Petroleum Machine Fittings enjoying high and long-standing reputation home and abroad.. >> More Website URL: http://www.bridgat.com/u5219