We Haixin Group locals SINOPEC ( 2nd largest) shengli oil field, My YM sukkersu at yahoo com, supplier of SINOPEC AND PERTAMINA,have one manufacturer base of Drill pipe with API 5D Certificaiton, and one trading branch which supply Pony Rod.
External diameter
( + 0.127, -0.254) 
1 1/ 8( 28.6) 
1 1/ 4( 31.8) 
1 1/ 2( 38.1) 

Pin thread nominal value ( mm) 
15/ 16( 23.8) PR
1 1/ 16( 27) PR
1 3/ 16( 30.2) PR
1 3/ 8( 34.9) PR

Matched sucker rod ( mm) 
5/ 8( 15.9) 
3/ 4( 19.1) 
7/ 8( 22.2) 
1( 25.4) 

Mechanical properties
1.carbon steel 620MPad
tensile strengthd827MPa
2.alloy steel 655MPad
tensile strengthd1100MPa

Coating properties
coating hardness e480HV200
coating thickness 0.254~ 0.508mm

Surface roughness
1.conventional polished rodd0.4¼ m
2.sprayed polished rodd0.8¼ m