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Product detials
pup joint
1. Grade:J55, L80, N80
2. Size: casing pup joint from 4-1/2" to 20"
3. Type: casing pup joint LTC,STC,BTC
4. Surface treatment: Whole phosphating, or inside phosphating and outside coating
5. Packing: bundled,carton, wooden case, wooden pallet, or as requsted
Product specification
Specification | O.D(mm) | W.T(mm) | Thread type | Steel grade | Length |
4-1/2 | 114.30 | 6.35 | STC,LTC,BTC | J55,N80,P110 | 0.5m-5m |
5 | 127.00 | 7.52 | STC,LTC,BTC | J55,N80,P110 | |
5-1/2 | 139.70 | 7.72 | STC,LTC,BTC | J55,N80,P110 | |
6-5/8 | 168.28 | 8.94 | STC,LTC,BTC | J55,N80,P110 | |
7 | 177.80 | 8.05 | STC,LTC,BTC | J55,N80,P110 | |
7-5/8 | 193.68 | 8.33 | STC,LTC,BTC | J55,N80,P110 | |
8-5/8 | 219.08 | 10.16 | STC,LTC,BTC | J55,N80,P110 | |
9-5/8 | 244.48 | 10.03 | STC,LTC,BTC | J55,N80,P110 | |
10-3/4 | 273.05 | 11.43 | STC,LTC,BTC | J55,N80,P110 | |
11-3/4 | 298.45 | 12.42 | STC,LTC,BTC | J55,N80,P110 | |
13-3/8 | 339.72 | 12.19 | STC,LTC,BTC | J55,N80,P110 | |
16 | 406.40 | 12.57 | STC,LTC,BTC | J55,N80,P110 | |
18-5/8 | 473.08 | 11.05 | STC,LTC,BTC | J55,N80,P110 | |
20 | 508.00 | 12.70 | STC,LTC,BTC | J55,N80,P110 |


Main Raw Material
Alloy steel pipe

Manufacturing process



About us
1. We are one of exporting windows of China Petroleum Machinery.
2. We provides clients with the oil production equipments that been manufactured by high quality petroleum equipments manufacturers of CNPC (China National Petroleum Corporation).
3. We have holding a high quality technical expert team and cooperating with CNPCR&D institutes and Chinese Petroleum Universities.
4. We also can supply the design and manufacturing the special products and equipments for clients according to the requirement.
5. Contact us for more information please.




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