Serial number | category | specification | Steel grade | Pipe end type | Production ( tons ) | Heat treatment method | ||
1 | Tubing and coupling | 73.02 × 5.51 × 9~12 | J55 | External thickening tubing | 3000 | Normalizing | ||
N80 | External thickening tubing | 5000 | Water quenching + tempering | |||||
N80 | Not thickened tubing | 10000 | Water quenching + tempering | |||||
P110 | Not thickened tubing | 1000 | Water quenching + tempering | |||||
P110 | Thickened tubing | 1000 | Water quenching + tempering | |||||
88.9 × 13 × 9~12 | J55 | Coupling | 1000 | Normalizing | ||||
N80 | Coupling | 2000 | Water quenching + tempering | |||||
P110 | Coupling | 100 | Water quenching + tempering | |||||
88.9 × 6.45 × 9~12 | J55 | External thickening tubing | 1000 | Normalizing | ||||
N80 | External thickening tubing | 500 | Water quenching + tempering | |||||
P110 | Not thickened tubing | 500 | Water quenching + tempering | |||||
P110 | Thickened tubing | 500 | Water quenching + tempering | |||||
88.9 × 5.49 × 9~12 | N80 | Not thickened tubing | 3000 | Water quenching + tempering | ||||
107.95 × 15 × 9~12 | J55 | Coupling | 300 | Normalizing | ||||
N80 | Coupling | 600 | Water quenching + tempering | |||||
P110 | Coupling | 100 | Water quenching + tempering | |||||
114.3 × 6.88 × 9~12 | N80 | Not thickened tubing | 2000 | Water quenching + tempering | ||||
P110 | Not thickened tubing | 800 | Water quenching + tempering | |||||
132.08 × 15 × 9~12 | J55 | Coupling | 200 | Normalizing | ||||
N80 | Coupling | 300 | Water quenching + tempering | |||||
P110 | Coupling | 100 | Water quenching + tempering | |||||
93.17 × 13 × 9~12 | J55 | Coupling | 1000 | Normalizing | ||||
93.17 × 13 × 9~12 | N80 | Coupling | 1000 | Water quenching + tempering | ||||
total | 35000 | |||||||
2 | Casing and coupling | 114.3 × 5.69 × 10~12 | N80 P110 | Not thickened casing | 5000 | Water quenching + tempering | ||
114.3 × 6.35 × 10~12 | N80 P110 | Not thickened casing | 10000 | Water quenching + tempering | ||||
139.7 × 6.2 × 10~12 | N80 P110 | Not thickened casing | 2000 | Water quenching + tempering | ||||
139.7 × 6.98 × 10~12 | N80 P110 | Not thickened casing | 2000 | Water quenching + tempering | ||||
139.7 × 7.72 × 10~12 | N80 P110 | Not thickened casing | 7000 | Water quenching + tempering | ||||
139.7 × 9.17 × 10~12 | N80 P110 | Not thickened casing | 5000 | Water quenching + tempering | ||||
153.7 × 14 × 9~12 | J55 N80 P110 | Coupling | 5000 | Water quenching + tempering | ||||
127 × 13.5 | J55 N80 P110 | Coupling | 2000 | Water quenching + tempering | ||||
total | 38000 | |||||||
3 | other | 133~154 × 8~10 × 9~12 | 20G X42 | 7000 | Normalizing | |||
total | 80000 | |||||||