China Custom Stainless Steel Pipe Fitting Threaded Femal 304 316 NPT Bsp BSPT Socket Coupling

Product Description

Stainless Steel Pipe Fittings API DIN EN ASTM Seamless or Welded Fittings





Seamless(SMLS) Pipe Fittings : 1/2″-24″ , DN15-DN600. 

Butt Welded Pipe Fittings (seam) :24″-72″, DN600-DN1800.

We aslo accept customized type


LR 30,45,60,90,180 degree ; SR 30,45,60,90,180 degree.

1.0D, 1.5D, 2.0D, 2.5D, 3D,4D,5D,6D,7D-40D.


SCH10,SCH20,SCH30,STD SCH40, SCH60, XS, SCH80., SCH100, SCH120, 

SCH140, SCH160, XXS.


ASME B16.9, ASTM A234, ASTM A420, ANSI B16.9/B16.25/B16.28; MSS SP-75


JIS B2311 ,2312,2313;

EN 15713-1 ,EN 15713-2, etc

we can also produce according to drawing and standards provided by customers.



Carbon steel(ASTM A234WPB,,A234WPC,A420WPL6. )

Stainless steel(ASTM A403 WP304,304L,316,316L,321. 1Cr18Ni9Ti, 

00Cr19Ni10,00Cr17Ni14Mo2,  ect.)

Alloy Steel:A234WP12,A234WP11,A234WP22,A234WP5,A420WPL6,A420WPL3.


Carbon steel:St37.0,St35.8,St45.8;

Stainless steel:1.4301,1.4306,1.4401,1.4571;

Alloy steel:1.7335,1.7380,1.0488(1. 0571 );


Carbon steel:PG370,PT410;

Stainless steel:SUS304,SUS304L,SUS316,SUS316L,SUS321;

Alloy steel:PA22,PA23,PA24,PA25,PL380;


10#,20#,20G,23g,20R,Q235,16Mn, 16MnR,1Cr5Mo, 12CrMo, 12CrMoG, 12Cr1Mo.


Transparent oil, rust-proof black oil or hot galvanized.


Petroleum, chemical, machinery, boiler,electric power, shipbuilding, construction, etc


NPS Designator Outside Diameter in. Schedule 10S in. Schedule 40S in. Schedule 80S in. Schedule 160 in. Schedule XX in.
1/4 0.540 0.065 0.088 0.119    
3/8 0.675 0.065 0.091 0.126    
1/2 0.840 0.083 0.109 0.147 .188 .294
3/4 1.050 0.083 0.113 0.154 .218 .308
1.0 1.315 0.109 0.133 0.179 .250 .358
1 1/4 1.660 0.109 0.140 0.191 .250 .382
1 1/2 1.900 0.109 0.145 0.200 .281 .400
2 2.375 0.109 0.154 0.218 .343 .436
2 1/2 2.875 0.120 0.203 0.276 .375 .552
3 3.500 0.120 0.216 0.300 .438 .600
3 1/2 4.000 0.120 0.226 0.318   .636
4 4.500 0.120 0.237 0.337 .534 .674
5 5.563 0.134 0.258 0.375 .625 .750
6 6.625 0.134 0.280 0.432 .719 .864
8 8.625 0.148 0.322 0.500 .906 .875
10 10.750 0.165 0.365 0.500 1.125  
12 12.750 0.180 0.375 0.500 1.312  
14 14.000 0.188 0.375 0.500 1.406  
16 16.000 0.188 0.375 0.500 1.594  

Detailed Photos



Business Visit

Detection Technology


Project Experiences



Why Choose PMC

1.Payment terms:        20% +80% TT, 100% LC at sight, LC 30days, etc.

2.Quality assurance:   We are responsible for any complains incurred from our pipe quality. No arguments,but solutions.

3.Certificate of origin: Either from our Singapore base or China to avoid your anti-dumping, if any.

4.Other certificates:    API, ISO, CE.

5.Biggest Advantage:  We have invested independent raw material mill.


1. Are you Manufacturer or trading company?
    We are professional manufacturer in steel industry for many years. 
    We can give you the factory price directly.

 2. Could you provide the samples?
     Sure,you can contact us directly to discuss the details.

 3. What is your MQO?

 4. Do you have stockist goods?
     Yes, we have warehouse in China and Singapore.
     You can send me the sizes you need , let me check it for you.


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stainless steel coupling

Temperature and Pressure Limits of Stainless Steel Couplings

The temperature and pressure limits of stainless steel couplings can vary depending on the specific design, size, and material of the coupling. In general, stainless steel couplings are known for their excellent temperature and pressure resistance, making them suitable for a wide range of applications, including high-temperature and high-pressure environments.

Temperature Limits:

Stainless steel couplings can typically handle a wide temperature range, from as low as -100°C (-148°F) to as high as 800°C (1472°F) or even higher for specialized high-temperature applications. However, the exact temperature limits depend on factors such as the grade of stainless steel used, the presence of any seals or elastomeric components, and the intended application. Some stainless steel couplings are specifically designed for extreme temperatures in industries like aerospace, oil and gas, and chemical processing.

Pressure Limits:

Stainless steel couplings are known for their excellent strength and resistance to pressure. They can handle pressures ranging from a few hundred PSI (pounds per square inch) to several thousand PSI, depending on the coupling’s size and design. High-pressure stainless steel couplings are commonly used in hydraulic systems, oil and gas pipelines, and heavy machinery applications where reliable sealing and pressure containment are critical.

It is important to consult the manufacturer’s specifications and technical data to determine the exact temperature and pressure limits of a specific stainless steel coupling model. Using the coupling within the specified limits ensures optimal performance and avoids potential failure or damage.

stainless steel coupling

Real-World Case Studies of Stainless Steel Couplings

Stainless steel couplings have been successfully used in numerous demanding situations across various industries. Here are a few real-world case studies that showcase the effectiveness of stainless steel couplings:

Case Study 1: High-Temperature Chemical Processing

In a chemical processing plant that handled corrosive and high-temperature chemicals, stainless steel couplings were employed to connect the pumps and motors in the system. The aggressive nature of the chemicals and the elevated temperatures posed a significant challenge to the equipment’s reliability. Stainless steel couplings with high-quality stainless steel alloys and precision machining were chosen to withstand the harsh environment. The couplings demonstrated exceptional corrosion resistance and maintained their structural integrity even at high temperatures, resulting in minimal downtime and increased equipment longevity.

Case Study 2: Marine Propulsion System

In a marine propulsion application, stainless steel couplings were used to connect the diesel engines to the propeller shafts. The couplings were exposed to seawater and had to withstand high torque loads and dynamic conditions during vessel operations. Stainless steel couplings with appropriate shaft misalignment capacity and superior corrosion resistance were selected. The couplings provided reliable performance, reduced vibrations, and eliminated the need for frequent maintenance, contributing to improved fuel efficiency and overall vessel performance.

Case Study 3: Food Processing Equipment

In a food processing facility, stainless steel couplings were integrated into various processing equipment, such as mixers, conveyors, and pumps. The requirement for frequent washdowns and exposure to different food products demanded couplings with excellent hygiene standards and resistance to corrosion. Stainless steel couplings with food-grade stainless steel alloys and smooth surfaces were chosen. These couplings not only complied with food safety regulations but also minimized the risk of contamination and ensured consistent and reliable operation.

Case Study 4: High-Speed Rotating Machinery

In a power generation plant that utilized high-speed rotating machinery, stainless steel couplings were utilized to connect the turbines and generators. The couplings were subjected to high rotational speeds and substantial torque loads. Stainless steel couplings with balanced design and precision manufacturing were employed to reduce vibrations and prevent premature failure. The couplings’ ability to handle the demanding conditions ensured uninterrupted power generation and enhanced overall system efficiency.

These case studies demonstrate the versatility and reliability of stainless steel couplings in challenging environments. Whether it’s high-temperature chemical processing, marine applications, food processing, or high-speed machinery, stainless steel couplings have consistently proven their value by providing reliable and efficient performance.

stainless steel coupling

Stainless Steel Coupling: Overview and Distinctive Features

A stainless steel coupling is a type of coupling made from stainless steel material. It is designed to connect two shafts in mechanical power transmission systems. Here are the key characteristics that differentiate stainless steel couplings from other types:

1. Material:

As the name suggests, stainless steel couplings are manufactured using stainless steel, a corrosion-resistant alloy composed of iron, chromium, and other elements. The stainless steel construction provides excellent resistance to rust, oxidation, and chemical corrosion, making these couplings suitable for harsh environments.

2. Corrosion Resistance:

The primary advantage of stainless steel couplings is their high resistance to corrosion. This property allows them to withstand exposure to moisture, chemicals, and extreme temperatures, making them ideal for applications in marine environments, chemical processing, food and beverage industries, and more.

3. Strength and Durability:

Stainless steel is a strong and durable material, which gives stainless steel couplings high load-bearing capabilities and a long service life. These couplings can handle heavy loads and provide reliable performance under demanding conditions.

4. Hygienic Properties:

Stainless steel couplings are known for their hygienic properties, making them suitable for applications in the food and pharmaceutical industries. They are easy to clean and maintain, ensuring the transmission of power without any risk of contamination.

5. Temperature Resistance:

Stainless steel couplings can operate efficiently over a wide temperature range, making them versatile in various industrial settings.

6. Aesthetic Appeal:

Stainless steel has a visually appealing, polished surface finish, making stainless steel couplings suitable for applications where aesthetics are important.

7. Compatibility:

Stainless steel couplings can be used with a wide range of shaft materials, including stainless steel, carbon steel, and others, without causing galvanic corrosion.

8. Reduced Maintenance:

Due to their corrosion resistance and durability, stainless steel couplings require minimal maintenance, resulting in cost savings and increased uptime.

Overall, stainless steel couplings offer a combination of corrosion resistance, strength, and versatility, making them a preferred choice in industries where durability and reliability are essential.

China Custom Stainless Steel Pipe Fitting Threaded Femal 304 316 NPT Bsp BSPT Socket Coupling  China Custom Stainless Steel Pipe Fitting Threaded Femal 304 316 NPT Bsp BSPT Socket Coupling
editor by CX 2024-02-04

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Stainless Steel Coupling

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