About Longyao Chengxin Valve Co., Ltd - Industrial Valves & Gauges Supplier in China

Longyao Chengxin Valve Co., Ltd is based in China. The company lists six distinct valve products in its current catalogue. All items fall under the industrial valves and gauges segment. The range includes gate, globe, butterfly, ball, check and swing‑check designs. Materials cited include stainless steel (SS304/316), cast iron, ductile iron and carbon steel. The valves are referenced by standards such as ANSI, DIN and PN.

The ANSI Class 300 WCB valve is offered in SS304 and SS316 grades for high‑temperature service. A DIN F4/F5 PN16 cast‑iron NRS gate valve follows European pressure‑class markings. The ductile‑iron swing check valve is described for water‑pipeline applications. The cast‑iron water‑type butterfly valve targets large‑diameter flow control. The 150 lb stainless‑steel ball valve is supplied as a two‑piece unit. The DIN carbon‑steel bellow‑seal globe valve aligns with the DIN 3352 specification.

Product Range and Specialties of Longyao Chengxin Valve Co., Ltd

The catalogue comprises an ANSI Class 300 WCB gate valve in stainless steel, a DIN F4/F5 PN16 cast‑iron gate valve, a ductile‑iron swing check valve, a cast‑iron water‑type butterfly valve, a 150 lb stainless‑steel two‑piece ball valve and a DIN carbon‑steel bellow‑seal globe valve. Each product is identified by its main material and standard reference, which matches common industry classifications for industrial flow‑control equipment.

In the valve industry, gate and globe valves are frequently supplied in ANSI pressure classes 150, 300 and 600, with API 6D or API 6FA certifications for petrochemical service. Butterfly valves typically conform to IEC 60534‑3‑3 and are offered in DN 50‑300 ranges with flanged or lug end connections. Ball valves for stainless‑steel applications often meet ISO 4401‑1 standards and are supplied in 150 lb (≈ 10 bar) pressure ratings. Check and swing‑check valves are commonly tested for water‑hammer resistance and are supplied with rubber or metal seals depending on the material grade.

Trade and Export Information - Longyao Chengxin Valve Co., Ltd

Exporters of industrial valves from China usually classify the products under HS code 8481, which covers “valves, taps, cocks, valves for pipes, boiler‑feed water, oil or gas.” Major import regions include Southeast Asia, the Middle East, Europe and North America, where the equipment is used in water treatment, oil‑gas processing and power generation. Buyers typically request ISO 9001 quality‑management certification, CE marking for EU markets and, where applicable, API or PED compliance for pressure equipment.

Logistically, valve shipments are packed in wooden crates or steel pallets to protect flanged and threaded ends, and they fit standard 20 ft or 40 ft containers. Common Incoterms are FOB Shanghai or CIF destination ports, allowing buyers to arrange inland transport. Chinese valve manufacturers often undergo third‑party inspection (e.g., SGS, Bureau Veritas) before shipment to verify dimensional tolerances, pressure‑test results and material certificates.

Sourcing from Longyao Chengxin Valve Co., Ltd - Buyer Guidance

When sourcing these valves, buyers should obtain a mill test report (MTR) confirming the chemical composition of stainless steel, cast iron or carbon steel grades. A pressure‑test certificate at the rated class (e.g., 300 psi for ANSI Class 300) and a dimensional drawing showing flange ratings, bore size and end‑connection type are standard verification documents. Requesting a sample or a prototype unit can confirm seal integrity and operational performance before committing to full‑scale orders.

Buyers should also verify that the supplier can provide ISO 9001 or equivalent quality‑system documentation, and inquire whether the valves have been tested to API 6D or IEC 60534 standards where required. Confirm the packaging format (crate size, pallet configuration) and the lead time for production, which typically ranges from 30 to 60 days for standard designs. Ensure that the HS code 8481 is correctly declared on commercial invoices to avoid customs delays.

What standards do the listed valves conform to?

The gate and globe valves reference ANSI pressure classes and DIN specifications, while the butterfly and ball valves align with IEC 60534 and ISO 4401 standards respectively. Material grades follow SS304/316, cast iron, ductile iron or carbon steel as indicated.

Which material certificates should I request?

Request a mill test report for the specific steel grade (SS304, SS316, carbon steel) or iron composition for cast‑iron items. The report should include chemical analysis and mechanical property data.

What are the typical pressure ratings for these products?

The ANSI Class 300 gate valve is rated for 300 psi (≈ 20 bar). The DIN PN16 gate valve is rated for 16 bar, and the 150 lb stainless‑steel ball valve corresponds to roughly 10 bar. Other valves follow the pressure class indicated by their standard designation.

How are the valves packaged for export?

Export shipments are usually placed in wooden crates or steel‑framed pallets, with protective padding around flanged connections. The packaging complies with container loading standards for 20 ft or 40 ft containers.

Which certifications are commonly required for import?

Importers often require ISO 9001 quality‑management certification, CE marking for EU markets, and API or PED conformity for pressure‑related applications. These should be confirmed with the supplier before order placement.

What is the typical lead time for an order?

Standard designs without custom machining generally have a lead time of 30‑60 days from order confirmation, depending on production scheduling and required testing.

Can I receive a sample before a full order?

Suppliers can provide a single‑piece sample or a prototype unit for functional testing. Samples are usually shipped under the same packaging standards as bulk orders.

What HS code is used for these valves in customs filings?

Industrial valves such as those listed are classified under HS code 8481, which covers all types of valves, taps and similar fittings for pipes.