Socket weld ends require the pipe to be inserted into a recess and then welded around the outside, creating a strong, leak-free joint suitable for high-pressure (up to 6000#) and high-temperature service. Threaded ends rely on NPT threads and sealant — easier to install but less reliable under vibration or thermal cycling. For steam, hydraulic, and critical process lines, socket weld is the preferred standard in the USA per ASME B31.1 and B31.3.

Yes. We offer 2-piece and 3-piece bolted designs in 304/316/316L. Full port (true bore) is standard for DN15–50. 3-piece design allows inline maintenance without removing the valve from the pipe — ideal for applications where downtime is critical. Let our sales team know your preferred pressure class and end configuration.

Absolutely. We regularly supply valves with CE/PED (2014/68/EU) for projects in Europe and the UK, and CRN registration for Canadian provinces. The CRN process takes approx. 2–3 weeks. Our documentation is prepared by a third-party notified body upon request.

For standard sizes with our existing molds, MOQ is 50 pieces. For custom end dimensions, extended stems, or special seat materials, MOQ starts at 100 pieces. However, we can offer sample orders of 2–5 units for qualification and testing — just reach out.

For continuous service up to 450°F (232°C), standard PTFE or RTFE is suitable. For up to 600°F (315°C), we recommend Devlon (glass-filled nylon). For steam and thermal oil above 600°F, PEEK seats with stainless steel backup rings are required. Our technical team can recommend the optimal seat material based on your media, temperature, and pressure cycle profile.

We accept T/T wire transfer (30% deposit, 70% before shipment), L/C at sight (for orders above $10,000), and PayPal for sample orders. For established USA clients, we also support net 30 or net 60 after credit review. All payments are protected with a clear contract and delivery guarantee.

From Tianjin Port to Los Angeles / Long Beach — approximately 18–22 days. To Houston or New York / Newark — 25–32 days. We also offer DDP (delivered duty paid) terms for USA buyers, covering all customs clearance and local delivery. Free sample shipping via FedEx/DHL takes 5–7 days.

We offer a 2-year comprehensive warranty covering manufacturing defects, material flaws, and seat leakage. If a valve fails under normal operating conditions within 24 months, we replace it free of charge, including shipping. We also provide a 5-year extended warranty for valve bodies (excluding wear parts).