Couplings and Sub-Couplings

Manufactured in compliance with API 11B requirements.

Available in all sizes compliant with API 11B standards.

Precision machined for thread integrity, torque transfer and long service life.

Cut, drilled, threaded, phosphate and spray metal coated treated for anti-galling marked and packed entirely in-house for consistent quality and traceability.

Couplings

Coupling and Sub-Coupling Grades

Grade Chemical Composition Yield
min ksi (Mpa)
Tensile Min
ksi (Mpa)
Tensile Max
ksi (Mpa)
Spray Metal Coating Product Marking
TC Carbon UNS G10XX0 or G15XX0 Series Steel 60 (414) 95 (655) 125 (862)
No
Yes
TC
TCS
TA Alloy UNS G41XX0, G51XX0 or G86XX0 Series Steel 60 (414) 95 (655) 125 (862)
No
Yes
TA
TAS
TS Special Any chemical composition containing Ni, Cr, Mo combination totaling min 1.15% alloying content 60 (414) 95 (655) 125 (862)
No
Yes
TS
TSS
HA Alloy UNS G41XX0, G51XX0 or G86XX0 Series Steel 80 (552) 125 (862) 155 (1068)
No
Yes
HA
HAS
HS Special Any chemical composition containing Ni, Cr, Mo combination totaling min 1.15% alloying content 80 (552) 125 (862) 155 (1068)
No
Yes
HS
HSS

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