| Material | Carbon Steel |
|---|---|
| Material Grade | A106 Gr.B, A53 Gr.B |
| Thread Type | NPT, BSPT, BSPP |
| Standard | ASTM A106, ASTM A53 |
| Surface Finish | Black |
| Size Range | 1/8" – 12" |
| Schedule | SCH 40: 1.73mm-9.53mm, SCH 80: 2.41mm-17.48mm |
| Thread Standard | ASME B1.20.1 |
| Pressure Rating | 150 PSI (SCH 40) / 300 PSI (SCH 80) |
We supply couplings for distributors, wholesalers, contractors, and industrial buyers. We manufacture carbon steel merchant couplings available for bulk orders.
“Merchant” represents couplings manufactured from carbon steel.
The carbon steel pipe coupling conforms to ASTM A865 and ANSI B1.20.1 thread standards.
It differs from malleable iron couplings by material. Merchant couplings include full and half couplings.
It is used for lower pressure. Tapered threads provide a tighter, more secure seal than straight threads.
Buyers should confirm whether tapered or straight pipe threads.

Full couplings have female threads on the inner side and a standard length. Half couplings are shorter than full pipe couplings.
The right type depends on the connection required, so confirm the coupling types, size, and thread specification first.
Our carbon steel pipe coupling is available for industrial, utility, and mechanical applications. Carbon steel offers a practical combination of strength, machinability, durability, and cost.
Depending on the market, specifications include ASTM, ASME, ANSI, DIN, EN, or BS. Thread standards such as NPT, BSPT, or BSPP.
For galvanized couplings, confirm the required zinc coating and applicable specification.
We can supply couplings according to your requirements:
We only receive bulk orders; send us your size, specification, thread, and quantity. We will check the requirements and provide a quotation accordingly.