Full bore (full port) has a ball bore equal to the pipe inner diameter — zero flow restriction. Reduced bore (reduced port) has a smaller ball bore, typically one pipe size down. For throttling or where higher pressure drop is acceptable, reduced bore saves cost. For isolation in viscous fluids or pigging systems, we always recommend full bore. Our standard flanged stainless steel ball valves are offered in both configurations.

Yes. For steam applications up to 350°C, we offer stainless steel bodies with PEEK (polyetheretherketone) seats and live-loaded graphite packing. We also provide extended bonnet designs to protect the actuator. Please specify your exact temperature and pressure parameters, and our engineering team will issue a tailored recommendation.

Standard custom sizes (DN50–DN200) with standard materials: 25–35 working days. For urgent orders, we offer Priority 15 (15 working days) at a 8% surcharge. We ship via express (DHL/FedEx) for samples, and sea freight (FOB or CIF) for bulk. We also offer DDP (Delivered Duty Paid) to US and EU addresses — no broker hassle.

Absolutely. Every order includes EN 10204 Type 3.1 material certificate (mill cert traceable to the heat number), dimensional inspection report, and hydrostatic pressure test certificate. We follow API 6D and ASME B16.34 for design and testing. NACE MR0175 certification is available for sour gas service.

For new customers, we typically require T/T (30% deposit, 70% against copy of B/L) or L/C at sight from a major bank. For smaller orders (under $5,000 USD), we accept PayPal or Western Union. After 2–3 successful orders, we can discuss open terms subject to credit evaluation.

We provide 24-month warranty against manufacturing defects. Our technical team offers free remote troubleshooting via video call or email. If a replacement part is needed, we expedite it within 48 hours. We also have an agent in the US (Texas) for urgent on-site support coordination.

Yes. We source actuators from top Chinese brands (e.g., Cewei, Auspicious) and international brands (e.g., Rotork, Auma upon request). We mount, test, and calibrate the assembly before shipment. We also provide a 3D model of the assembled unit for your piping layout validation.

Our flanged stainless steel ball valves typically offer 30–45% cost savings vs. equivalent European or US-made valves, while meeting the same standards (API 6D, CE, ASME). The savings come from our vertical manufacturing and lower overhead. We don't compromise on material quality — we use only certified stainless steel billet from established mills.