Customized Stainless Steel Investment Casting Valve Bonnet for Gate/Globe/Check Valve

• Customization: Available
• Process: Casting +Machining+Surface Treatment
• Molding Technics: Lost Wax Casting
• Application: Valve Industry
• Material: Stainless Steel,Carbon Steel,Alloy Steel
• Surface Preparation: Sand Blast
• Surface Roughness: Ra1.6
• Machining Tolerance: +/-0.02mm
• Standard: AISI
• Certification: ISO 9001:2000
• Industry: Oil & Gas, Chemical, Power Generation,etc
• Surface Finish: Clean and No Burrs
• Size: Customized
• Transport Package: Plywood Box
• Specification: Customized
• Trademark: NORD
• Origin: Ningbo, China
• Production Capacity: 50000 Tons /Year

Product Description

 

Product Description

A valve bonnet acts as a protective cover for the valve body.

It's made from the same material (cast or forged) and is attached by threading, bolting, or welding.

During assembly, the internal parts (like the stem and disk) are placed inside the body, and the bonnet secures them in place.

Key Features & Specifications

1.High-Quality Materials

• Stainless Steel - Excellent corrosion resistance.

• Carbon Steel- Ideal for water, oil, steam.

• Alloy Steel - Extreme corrosion/heat resistance.

2.Precision Casting Technology

• Investment Casting (Lost Wax):

  • High precision, smooth surface finish

  • Process: Wax pattern → Ceramic coating → Casting → Finishing

  • Ultra-smooth surfaces (Ra 3.2μm)

3. Applications

• Industrial valves (gate, globe, ball, check valves)

• Oil & gas pipelines, petrochemical plants

• Water treatment, power generation

• Heavy machinery, automotive sectors

4. Customization Options

• Custom sizes, shapes, thicknesses (per your drawings)

• Branding: logos, part numbers, markings

• Flexible MOQ (small or bulk orders)

• Custom packaging (wooden cases, pallets, etc.)

Accurate in reading drawings & Fast in delivery & Exact dimension control & 100% quality control & OEM Service & Strict material inspection & Prompt quote & lead time guarantee
1.  Product Name:	Investment Casting Valve Bonnet
2.  Material:	Stainless Steel,Alloy Steel,Carbon Steel
3.  Material Standard:	ASTM,AISI,ASME,SAE,NF EN,DIN EN,ISO,BS EN,SS,etc.
4.  Process:	Lost Wax Casting/Sand Casting & Machined
5.  Lead time:	30~40 days
6.  Place of origin	Ningbo, China
7.  Software for specification drawings:	PDF, Auto CAD, Solidworks, JPG, ProE,etc.
8.  Main production equipments:	Wax injection, CNC-machine-center, Lathe, Milling machine,Drilling machine,Boring Lathe,Grinding Machine, Heat treatment Furnace.
9.  Heat Treatment Machine:	Mesh-Belt-Furnace,Carburizing Quench Furnace,Chamer Furnace,etc.
10.  Surface Treatment:	Cold/Hot Zn Plating,Blackening Treatment(Salt Spray Test 48-96 hours),Ni Plating,Cr Plating,Spraying Undercoat,Anti-Rust Paint,Surface Paint,Plastic Paint,Coated Anti-Rust Water,Anti-oil,etc.
11.  Surface Heat Treatment:	Medium Frequence Quenching,High Frequence Quenching and Carburizing and Quenching,Oil Quenching,Water quenching,Normalizing,Temper,Annealing,etc.
12.  Dimension Inspection:	Calipers,Height Laugue,Micrometer Calipers,Inside Caliper Gauge,Angle and R Gauge,four coordinates measuring instrument.
13.  Productivity:	50000 tons  / year
14.  Packaging:	Wooden package after mandatory treatment or other

Product Image

 

 

 

Company Profile

Introduction of Nord Machinery CO.,Ltd:

Nord Machinery Co., Ltd. started with custom casting since 1997 and exported casting parts until 2001.From then,we have got good praise for reanable price and high quality from many our clients.Our market mainly covers America,Canada, Australia, Europe,South African,Middle East Asia. Among all exported casting parts,precision castings made by silica sol casting, water glass casting,lost foam casting take large proportion,such as boiler parts,container parts,agricultural equipment parts,auto parts,train parts, etc.

Apart from wear parts, we also provide other custom metal parts of intricate or simple shapes used in various industries,such as oil&gas equipment ,pumps, valves, agriculture, mining, construction, transportation and other industries.
 

Our Advantages:

1	3D Model drawing for exact dimension control
2	Prompt & Accurate quoation on requests
3	Production process tracking feedback in time
4	Secure & confidential contract
5	OEM service by custom-made
6	Absolute quality guarantee with strigent inspection

 

 Our mission to customers:

* Better Pricing For Similar Quality
* Better Quality For Similar Pricing
* Better Service For Similar Quality&Pricing
* Reasonably Better Than Other Competitors

 

Manufacturing Process

Inspection Equipment

FAQ