OD:Φ1.050"～4-1/2"
WT:0.113"～0.630"
Grade：J55, K55, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, Q125, V140, V155, etc.
Standard：API 5CT or otherwise agreed
End-Finish：PE, NU, EU, IF, REG, FH, etc.

OD:4-1/2"～20"
WT:0.205"～0.635"
Grade:J55, K55, M65, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, Q125, V140, V155, etc.
Standard：API Spec 5CT or otherwise agreed
End-Finish：PE, SC, LC, BC, IF, REG, FH, etc.

OD: 1"～20"
WT: 0.113"～0.875"
Grade:J55, K55, M65, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, Q125, V140, V155, etc.
Standard：API Spec 5CT or otherwise agreed
End-Finish：PE, NUE, EUE, STC, LTC, BTC

OD: 2-3/8"～18-5/8"
WT: 0.236"～4.725"
Grade：J55, K55, M65, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, Q125, V140, V150, V155, etc.
Standard: API Spec 5CT or Otherwise Agreed

OD：2"～30"
WT: 0.236"～4.725"
Grade：J55, K55, M65, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, Q125, V140, V155, 4130, 4130Mod, 4330V, 4340, 4145H, 4137H, 4145Mod, etc.
Standard：API Spec 5CT/ASTM A519 Otherwise Agreed

OD:2-3/8"～13-3/8"
WT: 0.205"～0.875"
Grade：J55, K55, M65, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, etc.
Standard：API Spec 5CT or Otherwise Agreed

OD：2-3/8"～7"
WT：0.039"～1.181"
Inventory Size: Φ60.3mm×5mm,Φ68mm×5.5mm,Φ73.02mm×9mm,Φ85.73mm×9.5mm, Φ88.9mm×8.8mm,Φ101.6mm×9mm,Φ127mm×11mm,Φ177.8mm×12.65mm, etc.
Grade：35CrMo, 26CrMo4, 32CrMo4, 27MnCrMoVNb, 26CrMoNbTiNb, etc.
Standard： Q/BQB 232, Q/OHAD005, API Spec 5CT or Otherwise Agreed

OD：1/8"～30"
WT: 0.250"～1.9"
Regular inventory size:Φ88.9*15.24,Φ101.6*19.05,Φ114.3*19.05,Φ139.7*31.75,Φ141.3*17.12, Φ141.3*19.05,Φ141.3*31.75,Φ168.3*21.95,Φ171.5*22.23
Grade：35CrMo ,4130,4140,4145, etc.
Standard：ASTM A519//NACE MR0175, NACE TM 0177 or specification as agreed
Mechanical property：Yield strength≥517Mpa, Tensile strength≥655Mpa, HRC≤22

OD：2"～30"
WT: 0.236"～4.725"
Grade : E75, X95, G105, S135, etc.
Standard：API SPEC 5D, API SPEC 7DP, etc.
End-Finish:EU, IU, IEU, etc.

Size：3-1/8"×1-1/4"～11"×3"
Grade:AISI 4145H, P530, P550
Standard：ASTM A519  API SPEC 7-1, API SPEC 7-2, API SPEC 5DP or otherwise agreed

OD: 1.9"～18-5/8"
WT: 0.113"～1.967"
Spec: API 5CT or Otherwise Agreed
--Product for anti- H2S Corrosion
Grade:BG80S, BG80SS, HS80S, HS80SS, BG95S, BG95SS, HS95S, HS95SS, BG110S,BG110SS, HS110S, HS110SS, etc.
--Product for anti- CO2 Corrosion
Grade：L80-9Cr, L80-13Cr, BG55-1Cr, BG80-1Cr, BG90-1Cr, BG110-1Cr , BG80-3Cr, BG90-3Cr, BG110-3Cr, etc.
-- Economic Product for anti- H2S+CO2+Cl corrosion
Grade：BG80S-3Cr, BG90S-3Cr, HS110S-3Cr, HS90S-3Cr, HS110S-3Cr, etc.

External Size：Φ4-1/2"×0.250" (Φ114.3mm×6.55mm),Φ4-1/2"×0.271" (Φ114.3mm×6.88mm), Φ7"×0.317" (Φ177.8×8.05mm), etc.
Internal Size：Φ2-7/8"×0.217" (Φ73.02mm×5.51mm),Φ3-1/2"×0.254" (Φ88.9mm×6.45mm), Φ5"×0.296" (Φ127×7.52mm), etc.
Grade：BG80H, BG110H, HS90H, HS95H, HS110H, HS95H-3Cr, HS110H-3Cr, etc.
Standard： API 5CT, Q/BQB 234, HK29-2019 or Otherwise Agreed
End-Finish：PE, NUE, EUE, STC, LTC, BTC, HSM-1, HSM-2, etc.