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Hex nut

Petrochemical hex nuts are core fasteners used in flange joints of petroleum refining and chemical processing units. Manufactured to SH/T 3404, HG/T 20634 (American system) and HG/T 20613 (European system) standards, these heavy hex nuts are designed to pair with corresponding studs and bolts under high-pressure, high-temperature operating conditions.
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Copper Nut

Brass fasteners are widely preferred for their excellent corrosion resistance, natural antimicrobial properties, and attractive golden finish. As a trusted brass fastener supplier in China, we supply a full range of copper alloy hardware including brass bolts, nuts, screws, washers, threaded rods and custom-made fasteners to clients in electrical, marine, plumbing and construction industries worldwide.Our brass fasteners are manufactured from standard grades such as C36000 (Free Cutting Brass), C26000 (Cartridge Brass) and CuZn39Pb3, ensuring consistent thread accuracy, good machinability and long service life even in humid or corrosive environments. Available in both metric and imperial sizes, these non-magnetic fasteners are ideal for electrical fittings, marine hardware, water treatment equipment, decorative applications and outdoor installations where steel fasteners would rust.Whether you need standard brass hex bolts, pan head machine screws, wing nuts or special-shaped custom parts, we can match your drawings, samples or international standards including DIN, ISO, ASTM and BS. Contact us for your brass fastener requirements and get factory-direct pricing with reliable lead time.
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PLATE FLAT WELDED STEEL PIPE FLANGE

Flat weld steel flange, also known as plate flange or slip-on flange, is widely used for connecting pipes, valves, pumps and other equipment in industrial piping systems. It features a flat circular disc with a central bore and evenly spaced bolt holes, welded to the pipe neck for a permanent and leak-proof joint.
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Weld Neck Flange

Weld Neck Flange, also known as WN flange, is a high-integrity pipe connection flange designed for severe service conditions including high pressure, extreme temperature cycling, and cyclic loading. It features a long tapered hub that gradually transitions from the flange thickness to the pipe wall thickness, effectively reducing stress concentration at the junction.
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Fire-resistant coated steel pipe

SUNRISE supplies high-quality plastic-coated steel pipes for fire protection, water supply, drainage,and industrial piping systems. Our coated pipes combine the strength of steel with corrosion-resistant epoxy (EP) or polyethylene (PE) inner and outer coatings.Available in red (fire fighting), blue (water supply), and customized colors with sizes from DN15 to DNDN1200. Compliant with ASTM A795, GB/T 5135, CJ/T 120 standards, suitable for grooved, flanged, threaded, and welded connections.
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boiler pipe

In a combined cycle system, the waste heat boiler recovers waste heat from the exhaust gas of the gas turbine to generate steam, which in turn drives the steam turbine to produce electricity. The HRSG extended tubes constitute a critical component of the waste heat boiler's primary assemblies. SUNRISE offers a range of HRSG extended tubes in multiple dimensional configurations, all of which have been certified by renowned domestic and international clients—including Harbin Boiler, Shanghai Boiler, Dongfang Boiler, IHI, and ALSTON—and are exported to overseas markets such as Japan, South Korea, and the United States.
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