Custom ASME Certified Dished Head Manufacturer in China Offering EN 10204 3.1
1.Products Range from Henan Guojiang Precision Formed Head Co., Ltd.
(1). Elliptical Head
(2). Torispherical Head
(3). Polished Mirror Head
(4). Conical Head
(5). Flat Head
(6). Pressure Vessel & Tank Head
(7). Pipe Caps
(8). Custom Order Accepted.
2. About Us:
Henan Guojiang Precision Formed Head Co., Ltd As One Of Leading Manufacturer of Stainless Steel ASME Dished Heads in China.
We offer full in-house processing solutions for dished heads, including joggling, pickling, sandblasting, NDT non-destructive testing, hole cutting, nozzle welding, mirror polishing and other customized machining services.
As an ASME U-Stamp and PED certified manufacturer of stainless steel formed heads, we supply EN 10204 3.1 material test certificates for all orders. Full traceability is guaranteed: raw materials are tracked by furnace heat numbers, and every head manufactured at our facility features complete production traceability records.
Backed by our dedicated internal order management system, we deliver goods punctually and can confirm accurate lead times for clients prior to order confirmation. Custom-sized & custom-processed head orders are highly welcomed.
3. Certifications Holds by Henan Guojiang Precision Formed Head Co., Ltd.
(1). GJ Formed Head Factory with Manufacturing Standards: Strict compliance with ASME Section VIII & PED standards.
(2). Our Company Holds a Full Range of Relevant Certifications, Including: Official ASME U-Stamp Holder, ISO 9001.
(3). Non-Destructive Testing (NDT): Section-by-section Radiographic Testing (RT) & Liquid Penetrant Testing (PT).
(4). Traceability: 100% material traceability with furnace heat numbers.
(5). Traceability: 100% Traceability for all dished heads, linked to factory-issued production order numbers.
(6). Strict Inspecition Rules: Small Pipe Caps Undergo Batch Inspectioin, and Every Single Large-Sized Head in Inspected Separately.
| Certification Standards |
| GB/T 25198-2023 |
| ASME BPVC Sec.VIII Div 1 |
| PED (Pressure Equipment Directive) |
| ISO 9001:2015 |
| ISO 14001:2015 |
4. Frequently Asked Questions(FAQ) from Henan Guojiang Precision Formed Head Co., Ltd.
Q1: Do you provide material certificates (EN 10204 3.1 / 3.2)?
A: Absolutely. EN 10204 Type 3.1 certificates are standard for all shipments.
Q2: What surface finishes are available?
A: Standard finishes include 2B (cold-rolled), No.4 (brushed), BA (bright annealed), and pickled & passivated. For sanitary applications (food, pharma), we offer mirror polish to Ra ≤ 0.8 μm or finer. Electropolishing is also available.
Q3: What is your typical lead time?
A: For standard sizes in stock grades (304/316L), lead time is typically 15–25 working days. Custom sizes, special alloys, or large diameters may require 30–45 working days. We will confirm a precise delivery schedule upon order placement.
Q4: Can you supply heads with PED / CE marking for the European market?
A: Yes. We supply PED 2014/68/EU-compliant heads with CE marking for all applicable categories. The head can be delivered with a PED certificate of conformity and notified body inspection where required.
Q5: What testing and inspection do you perform?
A: Our standard quality control includes visual inspection, dimensional check, and hydrostatic testing. Additional NDT methods — Radiographic Testing (RT), Ultrasonic Testing (UT), Penetrant Testing (PT), Magnetic Particle Testing (MT).
Q6: How do you package heads for international shipping?
A: Each head is individually wrapped with protective film, secured in a fumigation-free wooden crate or steel frame, and braced to prevent movement during transit. We ship globally via FCL, LCL, or breakbulk, with full export documentation including packing list, commercial invoice, and certificate of origin.
Q7: Can you manufacture non-standard or custom-shaped heads?
A: Yes. In addition to standard ASME & PED and DIN 28011 torispherical profiles, we can produce custom crown radii (CR), knuckle radii (KR), and straight flange lengths per your engineering drawings. Please send your drawing or specification for a feasibility review.
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