Frequently Asked Question

About Sales

What is the delivery time

Usually 150-180 days EXW for general valves.

What is the trade terms

EXW goods packed at the factory as standard, FOB, CIF, and DDP are supported, too.

What is your payment term

Normally 30% down payment before production, 70% balance before delivery.

What about the documents

For MRO/ Stock orders, the Standard document includes BS EN 1-204-2004 Type 3.1 on the final product for pressure-containing parts, API 598 or EN12266 pressure test certificates, general assembly drawing, and IOM. For project orders, we can provide documents according to project specifications at a charge.

Do you support extra inspection for valves

Yes, we support Third Party Inspection, and all related costs are for the buyer’s account.

What about the warranty

The warranty period shall expire on the earlier of twelve (12) months from the date of commissioning or eighteen (18) months from the date of Delivery to the Buyer.

About Valve Materials

Which material should be used for high-temperature valves

Chrome/Moly steels, particularly the 9 Cr-1Mo-V, C12A alloy, as well as some stainless steels, are used in most of today’s high-pressure/temperature power plant applications. For lower temperature service in these facilities, cast steel such as ASTM A216, and Grade WCB is used.

Which material should be used for Corrosion Resistant valves

Special alloyed materials such as Bronze, Gunmetal, Monel, Duplex & Super Duplex Stainless Steels, Hastelloy, Inconel, Titanium & Composites, Nickel Aluminum Bronze, Alloy 400, Bronze ASTM B62, Bronze ASTM B61, Phosphor Bronze, Titanium, Alloy 20, Alloy 625, 6Mo Stainless Steel, Duplex Stainless Steel, Alloy 825, Zirconium, etc.


The meaning of the abbreviations in WCA, WCB, and WCC. W stands for Fusion Weldable Quality / C stands for Cast Steels / A, B & C are respective grades based on composition and properties.

About Valve Standard & Certificate

What is Shell TAT Certificate

If a company has a Shell TAT Certificate, means it is one of the Shell-approved valve manufacturers. But not meaning all the valves that the manufacturer offered can meet the certificate, there will be a valve class & size qualification range.

What is the meaning of TAT

TAT=Type Acceptance Test, which is a term used in Shell specifications, but it also appears in other standards besides Shell.

What is the meaning of TAMAP

TAMAP=Technically Accepted Manufacturers and Products. Shell has a vendor management program known as TAMAP, which is a very extensive and multi-annual testing procedure. Vendors must undergo detailed product quality reviews. They also do a thorough screening of their quality assurance and control procedures.

What is an API standard

API is the abbreviation of the American Petroleum Institute. API defines the industry standard for the energy conservation of motor oil.

What is API 6D

API 6D is the specification for Pipeline Valves. API 6D specifies requirements and gives recommendations for the design, manufacturing, testing, and documentation of ball, check, gate, and plug valves for application in pipeline systems.

What is API 6A

API 6A is the standard or specification for valves used in wellhead and Christmas tree equipment.

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