Oct 19, 2021
1. Seamless Casing Steel Pipe Specifications
1) Grade:H-40,J-55,K-55,N-80,C-75,L-80,C-90,C-95,P-110,Q-125
2) Size: 4 1/2", 5", 5 1/2", 6 5/8", 7", 7 5/8", 9 5/8", 10 3/4", 13 3/8", 16", 18 5/8", 20"
3) Wall thickness: 5.11 - 16.13 mm
4) Clasp Type : STC, LTC, BTC
5) Length : R1,R2,R3
6) Products comply with API SPEC 5CT standards, and use for API 5CT emblem
2. Round thread casing coupling size quality and tolerance:
Code | Specification | Diameter W /mm | Min Length | Boring diameter /mm | Width of bearing surferingb/mm | Weight |
| Diameter D /mm |
| Short coupling Nl | Coupling length Nl |
|
| short couping | Coupling length |
4-1/2 | 114.30 | 127.00 | 158.75 | 177.80 | 116.68 | 3.97 | 3.62 | 4.15 |
5 | 127.00 | 141.30 | 165.10 | 196.85 | 129.38 | 4.76 | 4.66 | 5.75 |
5-1/2 | 139.70 | 153.67 | 171.45 | 203.20 | 142.08 | 3.18 | 5.23 | 6.42 |
6-5/8 | 168.26 | 187.71 | 184.15 | 222.25 | 170.66 | 6.35 | 9.12 | 11.34 |
7 | 177.80 | 194.46 | 184.15 | 228.60 | 180.18 | 4.76 | 8.39 | 10.83 |
7-5/8 | 193.70 | 215.90 | 190.50 |
|
