ASME & PED Certified Carbon Steel Custom Torispherical Heads from China Manufacturer
1.Descriptions of ASME & PED Certified Carbon Steel Custom Torispherical Heads:
ASME & PED‑Certified Custom Carbon Steel Torispherical Heads with Outer‑Side Single‑Bevel Grooves (VO, domestic marking only).
Non‑standard torispherical heads are available for custom orders against customer‑supplied drawings.
Henan Guojiang Precision Formed Head Co., Ltd. as one of a leading manufacturer of dished heads in a wide range of sizes and geometries, manufactured in compliance with ASME, PED and GB/T standards.
Raw material verification is provided: EN 10204 3.1 inspection certificates are issued for each order.
2. Certificates of ASME & PED Certified Carbon Steel Custom Torispherical Heads:
| Certification Standards |
| GB/T 25198-2023 |
| ASME BPVC Sec.VIII Div 1 |
| PED (Pressure Equipment Directive) |
| ISO 9001:2015 |
| ISO 14001:2015 |
(1). Manufacturing Standards: Strict compliance with ASME Section VIII & PED standards.
(2). Certifications: 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 linked to furnace heat numbers.
(5). Traceability: 100% Traceability for all dished heads, linked to factory-issued production order numbers.
3. Frequently Asked Questions:
(1) Are you a factory or a trading company?
Henan Guojiang Precision Formed Head Co., Ltd. is a dedicated manufacturing facility specializing in the production of dished ends (ellipsoidal, torispherical, hemispherical, and custom-formed heads) for industrial applications.
(2) Is your quality control system reliable?
Our production system operates under a structured quality management workflow with strict process control. Each manufacturing order is released only after technical review and process validation by the Production Technology Department.
All fabrication stages are governed by controlled process sheets (route cards), ensuring traceability and compliance at every step, including forming, heat treatment (if required), machining, and inspection. Batch-level quality control is implemented to ensure dimensional accuracy, surface integrity, and compliance with applicable technical specifications, including high-precision applications such as MRI and magnetic resonance equipment.
(3) Do you support customization?
Yes. We provide full customization services for non-standard and engineered dished heads. Production is carried out strictly according to client-supplied technical drawings, material specifications, design codes, and dimensional requirements. Engineering support is available for specification clarification prior to quotation and manufacturing.
(4) Do you strictly control delivery schedules?
Yes. Delivery control is integrated into our production planning system. Each order is assigned a defined manufacturing schedule based on process routing, material availability, and workload balancing.
Lead times are calculated prior to production release and are strictly managed through internal scheduling controls to ensure on-time delivery in accordance with confirmed production plans.
4. 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.
(9). Stainless Steel Dished Heads for Cryogenic Industry.
5. In-House Manufacturing Available for ASME & PED Certified Carbon Steel Custom Torispherical Heads:
Henan Guojiang Precision Formed Head Co., Ltd. We are Manufacturer of Dished Heads, We also provide the Following In-House Manufacturering Service:
(1). Blasting treatment for Carbon Steel Dished Heads, for Anti-Corrosion performance.
(2). Pickling treatment for Stainless Steel Dished Heads.
(3). Jogging Process for Dished Heads upon Customer Requirements, with Joggled Width and Depth. Also Known as Joggled Heads.
(4). Processing Service for Flanged‑nozzle Dished Heads is Available.
(5). Flanged and Reversed Dished Heads are Avaliable.
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