Fornecedores com licênças comerciais verificadas
Fornecedor Auditado Class T and Class SM coupling for sucker rods are manufactured as per API Specification 11B. For the thread cutting, we are using cold form rolled by displacing rather than by removing of material for making the coupling thread. The thread rolling cutting results in a compressive stress at the root of the thread, giving maximum strength to the traditional weak point of cut-thread couplings.
Class SM coupling, the spray metal is a specification hardening process and is applied on the base metal.
| Type | Sucker Rod Coupling | |||
| Class T&SM | Nominal Size in |
Outer Diameter +0.13 in -0.25 in |
Inner diameter +0.13 in -0.25 in |
Outer Size (O.D ×Length) in |
| Full Size | 5/8 | 1-1/2 | 15/16 | 1.500×4.000 |
| 3/4 | 1-5/8 | 1-1/16 | 1.625×4.000 | |
| 7/8 | 1-13/16 | 1-3/16 | 1.812×4.000 | |
| 1 | 2-3/16 | 1-3/8 | 2.187×4.000 | |
| 1-1/8 | 2-3/8 | 1-9/16 | 2.375×4.500 | |
| Slim Hole | 5/8 | 1-1/4 | 15/16 | 1.250×4.000 |
| 3/4 | 1-1/2 | 1-1/16 | 1.500×4.000 | |
| 7/8 | 1-5/8 | 1-3/16 | 1.625×4.000 | |
| 1 | 2 | 1-3/8 | 2.000×4.000 | |
| Mechanical Property | Tensile Strength ≥655MPa | |||
Dongying Zhaoxin Industry and Trade Co.,Ltd is an ISO-9001, ISO-14001, OHSAS-18001 certified company and has all the quality systems in place for design, planning,manufacturing and quality monitoring & traceability to ensure that Dongying Zhaoxin Industry and Trade Co.,Ltd products match the highest quality & reliability Standards similar to any International major in this field.
Dongying Zhaoxin Industry and Trade Co.,Ltd with perfect attitude, product and service, is going to make further development together with customers at home and abroad .
Fornecedores com licênças comerciais verificadas
Fornecedor Auditado 
