Loading Port:China Main Port
Payment Terms:TT or LC
Min Order Qty:-
Supply Capability:-
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 | 234.95 | 197.64 | 5.56 | 12.30 | 15.63 |
8-5/8 | 219.08 | 244.48 | 196.85 | 254.00 | 223.04 | 6.35 | 16.23 | 21.67 |
9-5/8 | 244.48 | 269.88 | 196.85 | 266.70 | 248.44 | 6.35 | 18.03 | 25.45 |
10-3/4 | 273.05 | 298.45 | 203.20 | --- | 277.02 | 6.35 | 20.78 | --- |
11-3/4 | 298.45 | 323.85 | 203.20 | --- | 302.42 | 6.35 | 22.64 | --- |
13-3/8 | 339.72 | 365.12 | 203.20 | --- | 343.69 | 5.56 | 25.66 | --- |
Chemical composition:
Standard codes | Models of steel tubes | Chemical compositions | ||||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Als | ||
API SPEC 5CT | J55K55 | 0.340.39 | 0.200.35 | 1.251.50 | ≤0.020 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 | ≤0.020 | ||
N80 | 0.340.38 | 0.200.35 | 1.451.70 | ≤0.020 | ≤0.015 | ≤0.15 | 0.110.16 | ≤0.020 | ||||
L80(13Cr) | 0.150.22 | ≤1.00 | 0.251.00 | ≤0.020 | ≤0.010 | 12.014.0 | ≤0.20 | ≤0.20 | ≤0.020 | |||
P110 | 0.260.35 | 0.170.37 | 0.400.70 | ≤0.020 | ≤0.010 | 0.801.10 | ≤0.20 | ≤0.20 | 0.150.25 | ≤0.08 | ≤0.0 | |
3. FAQ of Seamless Casing Steel Pipe:
①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.
②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.
③Why should you chose us?
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.
Any question, pls feel free to contact us !
4、Seamless Casing Steel Pipe Images：
