• Model NO.：3,4"
• Size：3,4", 7,8".1"
• Type1：Slim Hole Coupling
• Type2：Full Size Coupling
• Grade：D
• Usage：Oil (Gas) Production Machinery
• Power Type：Diesel
• Transmission System：Mechanical
• Transport Package：Wooden Box
• Specification：3,8", 7,8", 3,4", 1"
• Trademark：zs
• Origin：Puyang
• HS Code：7304
• Production Capacity：40000 Per Month

grade   yield strength Rel(Mpa)Tensile strength Rm(Mpa)Percentage Elongation A(%)Contraction percentage of Area Z(%)Impact toughnessC≥ 414620-793≥ 12 ≥ 55 ≥ 70D≥ 620794-965≥ 10 ≥ 50 ≥ 58.8K≥ 414620-793≥ 12 ≥ 55 ≥ 70
 
Technical ParametersSizeRod D.(in)Thread D.(in)Length of pin(mm)Length of wrench(mm)Width of Wrench (mm)Length of rod(ft)5/8 5/8 15/16 31.75≥ 31.8  22.20 2 / 4 /6 / 8 /10/25/303/4 3/4 1-1/16 36.50 ≥ 31.8  25.40 2 / 4 /6 / 8 /10/25/307/8 7/8 1-3/16 41.28 ≥ 31.8  25.40 2 / 4 /6 / 8 /10/25/301 1 1-3/8 47.63 ≥38.1 33.30 2 / 4 /6 / 8 /10/25/301-1/81-1/81-9/1653.98 ≥41.3 38.10 2 / 4 /6 / 8 /10/25/30