
Double Male Thread / Double Male Nipple
PRODUCT PARAMETERS
The Double Male Thread Nipple is a core threaded fitting in medium- and low-pressure piping systems, designed for pipeline extension and transition connection. It features a solid forged or machined structure, with male threads on both ends and a plain shank section in the middle. This configuration allows quick screw connection with female-threaded pipes, valves, or fittings at both ends, enabling pipeline length extension or seamless transition between different components.
It offers easy installation and reliable connection, and can be customized in various lengths to meet specific requirements. Applicable to a wide range of industrial conditions, including medium/low pressure, medium temperature, and corrosive media. Full specification customization is supported.
Application Fields:
Widely used in industries such as petroleum, chemical, oil & gas transportation, electric power and energy, metallurgy, shipbuilding, pharmaceuticals, heating supply, and long-distance pipelines. It is suitable for severe working conditions involving steam, oil products, gases, flammable, explosive, and corrosive media. Serving as an economical and efficient solution for pipeline extension and transition connections in medium- and low-pressure piping systems.
Description
| Item | Specification |
| Pressure Rating | PN2.5-PN400/ CLASS150, CLASS300, CLASS600, CLASS900, CLASS1500, CLASS2500 |
| Manufacturing Standards | Compliant with GB, ANSI, DIN, JIS, and other international standards |
| Material | Carbon steel, stainless steel, alloy steel, low-temperature steel, duplex steel, etc. |
| Surface Treatment | Pickling and passivation, anti-rust oil coating, painting. hot-dip galvanizing, etc. |
| Origin | China |
| Connection Type | Butt-weld |
| Temperature Range | -50°C to +450°C (specific temperature resistance depends on material and pressure rating) |
FAQs
We are a professional manufacturer of flanges and pipe fittings located in Mengcun Hui Autonomous County, Cangzhou, China. Our factory covers approximately 50,000 square meters and operates more than 10 specialized production lines, allowing us to provide factory-direct products, stable quality control, and reliable production capacity.

Yes. In addition to standard products, we provide customized flanges and pipe fittings according to customers’ drawings, technical specifications, material requirements, dimensions, pressure ratings, surface treatments, and application conditions. Our production facilities support forging, pressing, machining, cold forming, hot extrusion, heat treatment, and other manufacturing processes.







We manufacture flanges and pipe fittings in carbon steel, stainless steel, and alloy steel. Products can be manufactured according to major international standards, including ASME, GB, EN, JIS, DIN, BS, and GOST. Please provide the required material grade, standard, size, pressure rating, and product type when requesting a quotation.
We have established a full-process quality control system covering raw material inspection, production monitoring, dimensional inspection, heat treatment, machining, surface finishing, and final testing. Available testing capabilities include spectral analysis, hydrostatic testing, and non-destructive testing. Our quality management system is certified according to ISO 9001.
The production time depends on the product type, material, dimensions, quantity, technical standard, and customization requirements. With an annual production capacity of more than 30,000 tons and convenient access to Tianjin Port, we can support both batch production and customized project orders. A detailed delivery schedule will be confirmed after reviewing your specifications.









