Our downloadable valve catalogue pdf includes complete dimensional drawings (face-to-face per ASME B16.10, flange drilling per ASME B16.5), pressure-temperature charts for all standard materials, torque values for all sizes, weight data, material specification breakdowns (body, disc/ball, seat, stem, packing), available trim options, NDE requirements, and our standard packing & crating specification. It covers 8 product families: butterfly, gate, globe, check, ball, Y-strainer, foot, and stainless steel valves in threaded/BW/SW ends.

Yes. Send us your project specification or existing drawing (PDF, DWG, or STEP format). Our engineering team will create a customized technical data sheet PDF with your exact pressure class, end connections, material grade, trim, and certification requirements. We return a signed drawing for approval within 48 hours. The dimensional accuracy matches what we will manufacture — no deviations.

We offer DDP (Delivered Duty Paid) to any commercial address in the USA. This means the price you see is the price you pay — including all freight, insurance, customs clearance, and US import duties. No surprise broker fees, no storage charges at the port, no last-minute line items. Transit time: typically 28–35 days from order confirmation to delivery at your loading dock. We also offer FOB Tianjin or CIF US ports if your logistics team prefers to handle the last mile.

Every shipment includes EN 10204 Type 3.1 material certificates (traceable to the mill), a Certificate of Compliance confirming the valves match the approved drawing, and a hydrostatic pressure test certificate. We hold ISO 9001:2015, CE (Notified Body), API 609, and API 598. UL/FM certification for fire-safe butterfly valves is in advanced stages — contact us for the current status. For US federal projects, we can provide FAR-compliant documentation. Third-party inspection by SGS, Bureau Veritas, or your own QA team is always welcome at our factory.

Standard terms for new US customers: 30% T/T advance payment with order, 70% balance against copy of shipping documents (bill of lading). We also accept L/C at sight via confirmed US bank. For project-valued orders above $50,000, we can discuss phased payments linked to key production milestones. We invoice in USD, and all bank charges are clearly stated in our proforma invoice — no hidden fees.

Yes. We supply off-the-shelf samples of standard valves (butterfly, gate, globe, check up to 6") from our finished goods inventory. You pay only the shipping cost — the sample valve itself is free of charge for qualified buyers. Custom samples (non-standard size, special trim, alternative materials) require a sample fee refundable against a production order. Lead time for custom samples: 15–25 days. Contact us to discuss which sample matches your testing needs.

We follow the same design codes and manufacturing standards as Western manufacturers — API, ASME, BS, ISO. Our quality system is ISO 9001:2015 certified. Each valve undergoes hydrostatic shell and seat testing (per API 598 or ISO 5208 rate A), material verification (PMI on request), dimensional inspection (with recorded report), and visual examination. We maintain dimensional traceability on every casting heat. Our reject rate for US orders in the last 12 months: 0.3% — and we replace any non-conforming valve at our cost, including freight.

For standard valves (butterfly, gate, globe, check, ball in common sizes and materials): 15–30 days from order confirmation to factory ready. Add 28–35 days for sea freight to a US port (DDP delivery to your door). Express shipping (DHL/FedEx) for samples or small orders: 5–7 days door-to-door. For non-standard sizes, special alloys, or custom trim: 30–50 days factory lead time. We provide weekly production updates with photos during manufacturing.