Zhejiang Seamless Pipe Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 100 ton/month |
| Delivery Time | 3 weeks/container |
| Packaging Details | Plywood case |
| Product Name | Threaded Coupling |
| Material | Casting Grade CF8 |
| Type | Coupling, Casting |
| Standard | ISO 4144 (Dimensions, ref.) |
| Pressure Rating | 150LB |
| Size | Available in various sizes |
| Brand Name | SMLSCO |
| Certification | |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 100 ton/month |
| Delivery Time | 3 weeks/container | Packaging Details | Plywood case |
| Product Name | Threaded Coupling | Material | Casting Grade CF8 |
| Type | Coupling, Casting | Standard | ISO 4144 (Dimensions, ref.) |
| Pressure Rating | 150LB | Size | Available in various sizes |
| Brand Name | SMLSCO | Certification | |
| Place of Origin | China | ||
| High Light | 304 Stainless Steel Coupling ，Casting Stainless Steel Coupling ，Class 150 Threaded NPT | ||
| Attribute | Value |
|---|---|
| Product Name | Threaded Coupling |
| Material | 304 Stainless Steel / Casting Grade CF8 |
| Standard | ASTM A351 (Material) / ISO 4144 (Dimensions) |
| Fitting Type | Equal Coupling, Casting |
| Connection | Threaded NPT |
| Pressure Rating | Class 150 |
| Application | General Plumbing, Low-Pressure Piping |
| Size | Available in various sizes |
This coupling features NPT (American standard pipe taper thread) with a 60° tooth angle and 1:16 thread taper, creating an effective mechanical seal when tightened. The connection requires no welding, offering convenient installation and disassembly. This widely used connection method is common in industrial and commercial piping systems throughout North America and globally.
304 stainless steel (cast as CF8) offers excellent corrosion resistance in water, air, and weakly corrosive environments. Its combination of mechanical properties and workability makes it ideal for manufacturing low-pressure pipe fittings in water supply, drainage, and general chemical applications.
Class 150 cast couplings are fundamental components for connecting straight pipe sections in low-pressure systems. They are widely used in:
Founded in 2006, SMLSCO is a global leader in stainless steel piping solutions, offering comprehensive procurement services including pipes, flanges, and fittings. Our strengths in inventory, delivery speed, and competitive pricing make us a reliable partner for streamlining your supply chain.
SMLSCO offers a full range of cast stainless steel fittings for medium and low pressure applications, including elbows, tees, unions, plugs, caps, and nipples - providing complete, cost-effective solutions for your piping projects.
Q1: What are the differences between casting and forged pipe couplings in terms of usage?
A1: Casting pipe couplings are designed for low-pressure systems such as plumbing and low-pressure gas, offering excellent cost-effectiveness. Forged pipe couplings are typically used in high-pressure applications.
Q2: Do I need to use sealing material when installing this NPT threaded pipe coupling?
A2: Yes. NPT is a tapered pipe thread, and although it has mechanical sealing capabilities, to ensure 100% leak-proof performance and prevent galling of stainless steel threads, PTFE tape or a professional pipe thread sealant must be used during installation.
Q3: Can this 304 pipe coupling be used to connect carbon steel pipes?
A3: Physically, it is possible (as long as the threads are both NPT), but we do not recommend long-term mixed use. Contact between stainless steel and carbon steel in a humid environment can easily cause "galvanic corrosion," leading to accelerated rusting at the connection point. We recommend using it with SMLSCO's stainless steel nipples.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2006
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Zhejiang seamless pipe co.,ltd. (SMLSCO) is a specialized stainless steel piping systems provider with 19 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes. With 19 years of growth, we have establis... Zhejiang seamless pipe co.,ltd. (SMLSCO) is a specialized stainless steel piping systems provider with 19 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes. With 19 years of growth, we have establis...
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