Name of the mechanism for preparing the technical standard for piston type regulating valve

1.1.2 The technical standard used shall be the new version of ZUI issued at the time of signing the contract. All screws, nuts, bolts, studs and threads of related pipe fitting shall be in accordance with GB standard. If the technical standards and requirements in this contract are inconsistent with national standards and relevant industry standards, the higher technical requirements shall prevail. If the seller adopts standards other than those stipulated in the contract, the buyer must agree to use them.

The design, manufacture, factory inspection and product quality of valves and associated equipment shall meet the following standards (but not limited to) :

GB/T1224 General requirements for pressure relief valves

GB/T1225 Performance test Methods for pressure relief valves

Basic technical conditions of inlet valves for large and medium-sized water turbines

JB/T8527 metal sealed butterfly valve

GB/T12238 Flanged and clamp connected resilient sealed butterfly valve

Fixed conical valve JB/T12796

Pressure test for industrial valves

GB/T12252 General valve Supply requirements

GB150 pressure vessel

Definition and selection of DN (nominal size) of GB/T1047 pipe elements

GB/T1048 Definition and selection of PN (nominal pressure)

GB/T1184 Shape and position tolerances unmarked tolerance values

GB/T1771 paints and varnishes - Determination of resistance to neutral salt spray

GB/T9113.1 ~ 9113.26 monolithic steel pipe flange

Butt welded steel pipe flange GB/T9115.1 ~ 9115.36

GB/T12220 Industrial valve designation

Part GB/T12223 Connection of rotary valve actuators

Method of preparation of JB/T308 valves

JB/T7748 Valve cleanliness and determination method

JB/T8528 General valve electric device technical conditions

GB50171 Wiring construction and Acceptance Specifications for panels, cabinets and secondary circuits of electrical Installations

GB/T 3797 Electrical control equipment