FAQ

Depending on the product and order, available documents may include:

• Technical manual

• Product brochure

• Packing list

• Certificate of conformity

• Warranty card

• Operation video

• Commercial invoice

• Packing information

• Export documentation

Any special documentation requirements should be confirmed before order placement.

Some valve pressure test benches, pipeline machining equipment, and industrial maintenance systems can be customized according to confirmed technical requirements.

Portable valve grinding machines are generally standard products. Any requested modification must first be reviewed by our technical team to confirm feasibility.

Please provide drawings, working ranges, valve structures, operating conditions, and any special technical requirements for evaluation.

Please provide the following information for a valve pressure test bench quotation:

• Valve types

• Minimum and maximum valve sizes

• Maximum test pressure

• Test medium

• Hydraulic, pneumatic, or combined testing requirements

• Valve connection type

• Valve face-to-face dimensions

• Required testing standards

• Power supply

• Required lifting or handling system

• Installation and operating environment

For special projects, technical specifications, valve drawings, and test requirements are strongly recommended.

No single standard machine is suitable for every valve type and every valve size.

Different machines are designed for different applications, including:

• Flat valve seats

• Conical valve seats

• Safety valve seats

• Gate valve seats

• Gate valve discs

• Large-diameter valve sealing surfaces

For some projects, two or more machines may be required to cover the complete working range and different valve structures.

Portable valve grinding machines are mainly used for on-site or in-situ valve repair. They are suitable when removing the valve from the pipeline is difficult, expensive, or time-consuming.

Stationary valve grinding machines are mainly used for workshop or offline maintenance. They provide a stable working platform and are suitable for repeated valve repair work.

The appropriate machine type depends on the valve structure, repair location, working range, and maintenance frequency.

To recommend a suitable valve grinding machine, we normally need the following information:

• Valve type

• Nominal valve size

• Actual sealing-surface diameter

• Valve-seat or valve-disc structure

• Required grinding depth

• Minimum available installation space

• On-site or workshop repair

• Valve drawings or clear photos

Nominal valve size alone is usually not enough for accurate machine selection. The actual sealing-surface dimensions are especially important.

Our equipment is commonly used in the following industries:

• Power generation

• Oil and gas

• Refining and petrochemical

• Chemical processing

• Steel and metallurgy

• Shipbuilding and marine maintenance

• Pulp and paper

• Industrial maintenance workshops

• Shutdown and field-repair projects

The suitable equipment depends on the valve type, maintenance method, working range, and site conditions.

Our main product categories include:

• Portable valve grinding machines

• Stationary valve grinding machines

• Valve pressure test benches

• Portable pipeline cutting and beveling machines

• Stationary pipeline cutting and beveling machines

• Milling-type plate beveling machines

• Related valve and pipeline maintenance equipment

We can also recommend suitable equipment based on the valve type, working range, repair method, and site conditions.

Metals Kingdom Industry Limited specializes in valve and pipeline maintenance equipment for industrial applications.

Our product range includes portable and stationary valve grinding machines, valve pressure test benches, pipeline cutting and beveling machines, and related maintenance equipment.

Our manufacturing experience dates back to 1994, and our equipment is used in power generation, oil and gas, refining, petrochemical, chemical processing, steel, shipbuilding, pulp and paper, and other industrial sectors.