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Help CenterEN10216-2 P235GH / P265GH Seamless Pressure Tubes for Pressure Vessels & Boilers | OD 6-204mm
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EN10216-2 P235GH / P265GH Seamless Pressure Tubes for Pressure Vessels & Boilers | OD 6-204mm
Wuxi Hengzhihui supplies seamless pressure tubes in carbon steel and alloy steel grades, compliant with EN10216-1, EN10216-2, DIN17175, ASTM A106, ASTM A333, GB/T6479, GB/T9948 and GB/T5310. Engineered for pressure vessels, boilers, heat exchangers, chemical equipment, and petrochemical refining systems. Available in grades including P235GH, P265GH, ST35.8, ST52, 20G, 15CrMo and 12Cr1MoVG. Outside diameter range from 6mm to 204mm with full material traceability. EN 10204 Type 3.1 certification and third-party inspection (SGS/BV) supported.
Key Specifications
| Parameter | Range / Details |
|---|---|
| Outside Diameter | 6mm – 204mm (custom sizes available) |
| Wall Thickness | 1mm – 30mm (depending on OD and standard) |
| Manufacturing Process | Hot Finished / Cold Drawn / Cold Rolled |
| Surface Condition | Black / Pickled / Bright Annealed |
| Length | Random length (5-12m) or fixed length as per order |
| End Finish | Plain ends / Beveled ends |
| Testing Methods | Hydrostatic Test, Ultrasonic Test (UT), Eddy Current Test (ECT), Tensile Test, Hardness Test, Impact Test, Flattening Test |
| Documentation | EN 10204 Type 3.1, Mill Test Certificate, Inspection Report, Heat Treatment Report, Dimensional Report |
Available Standards & Grades
| Standard | Grade / Material | Primary Application |
|---|---|---|
| EN10216-1 | P195TR1/TR2, P235TR1/TR2 | General pressure equipment, mechanical pressure systems |
| EN10216-2 | P235GH TC1/TC2 | Boilers, heat exchangers, pressure vessels, elevated temperature service |
| EN10216-2 | P265GH TC1/TC2 | Higher strength pressure equipment, industrial vessels, thermal systems |
| DIN17175 | ST35.8 | Steam systems, boilers, thermal equipment |
| DIN17175 | ST52 | Mechanical engineering, structural applications |
| ASTM A106 | Grade A / B / C | High temperature process piping, industrial plants |
| ASTM A333 | Grade 1 / Grade 6 | Low temperature pressure pipes, cryogenic service |
| GB/T6479 | 10, 20, 16Mn | High pressure chemical equipment, fertilizer equipment |
| GB/T9948 | 10, 20, 15CrMo | Petroleum cracking and refining equipment |
| GB/T5310 | 20G, 15CrMoG, 12Cr1MoVG | High pressure boiler tubes, power generation |
Material Options Available:
✅ Carbon Steel — P235GH, P265GH, ST35.8, ST52, 20#, 20G
✅ Alloy Steel — 15CrMo, 12Cr1MoVG (for elevated temperature service)
Product Categories by Application
| Product Type | Standard | Grade | Typical End Use |
|---|---|---|---|
| General Pressure Tube | EN10216-1 | P195TR1/TR2, P235TR1/TR2 | Industrial pressure vessels, mechanical equipment |
| Elevated Temperature Pressure Tube | EN10216-2 | P235GH TC1/TC2 | Boilers, heat exchangers, thermal systems |
| High Strength Pressure Tube | EN10216-2 | P265GH TC1/TC2 | Pressure equipment, industrial vessels |
| Heat Resistant Tube | DIN17175 | ST35.8 | Steam boilers, thermal equipment, piping systems |
| Structural Pressure Tube | DIN17175 | ST52 | Mechanical engineering, structural frames |
| High Temp Process Pipe | ASTM A106 | Grade A / B / C | Process piping, industrial plant applications |
| Low Temperature Pressure Pipe | ASTM A333 | Grade 1 / Grade 6 | Cryogenic service, low temperature systems |
| Chemical Equipment Tube | GB/T6479 | 10, 20, 16Mn | High pressure chemical, fertilizer equipment |
| Petroleum Refining Tube | GB/T9948 | 10, 20, 15CrMo | Petrochemical refining, cracking equipment |
| High Pressure Boiler Tube | GB/T5310 | 20G, 15CrMoG, 12Cr1MoVG | Power generation, high temperature equipment |
Why Pressure Tubes Require Strict Quality Control
Pressure equipment operates under challenging conditions that demand superior product integrity:
💨 Internal Pressure — Continuous stress from contained fluids or gases
🌡️ Elevated Temperature — Sustained heat exposure affecting material properties
🔄 Thermal Stress — Expansion and contraction cycles
⏳ Continuous Operation — Long service life with minimal maintenance
Therefore, pressure tubes require strict control of:
✓ Chemical composition (precise control of carbon, alloying elements)
✓ Mechanical strength (tensile, yield, creep resistance)
✓ Impact performance (toughness at operating temperature)
✓ Surface quality (freedom from defects that could initiate failure)
✓ Testing documentation (verification of every heat and lot)
Hengzhihui works with qualified manufacturing partners to provide reliable pressure tube solutions with complete traceability.
Manufacturing Process Capability
| Process | Capability |
|---|---|
| Hot Finished | Suitable for larger sizes, good mechanical performance, cost-effective |
| Cold Drawing | High dimensional accuracy, improved surface quality, enhanced mechanical properties |
| Heat Treatment | Annealing, Normalizing, Quenching & Tempering — per standard requirements |
| Surface Treatment | Pickling, Phosphating, Bright annealing |
| Cutting & End Finishing | Precise length cutting, plain or beveled ends (for welding) |
Quality Control Inspection
| Inspection Type | Method / Equipment | Purpose |
|---|---|---|
| Chemical Composition | Spectrometer analysis | Verify elements conform to standard specification |
| Tensile Testing | Universal testing machine | Confirm yield strength, tensile strength, elongation |
| Impact Testing | Charpy impact tester | Verify toughness at specified temperature (ambient or low) |
| Hardness Testing | Rockwell / Brinell tester | Confirm hardness within specification range |
| Hydrostatic Testing | Pressure test equipment | Verify leak-tightness and pressure resistance |
| Ultrasonic Testing (UT) | Non-destructive testing | Detect internal defects — laminations, inclusions |
| Eddy Current Testing (ECT) | Non-destructive testing | Detect surface and near-surface defects |
| Flattening Test | Hydraulic press | Assess ductility and soundness |
| Dimensional Inspection | Micrometer, caliper, gauge | Verify OD, WT, length, straightness |
Application Industries
| Industry | Typical Equipment | Recommended Standards |
|---|---|---|
| Pressure Vessel Industry | Storage vessels, process equipment, industrial containers | EN10216-2 P235GH/P265GH, GB150 |
| Chemical Industry | Reaction equipment, heat transfer systems, piping | GB/T6479, EN10216, ASTM A106 |
| Petrochemical Industry | Refining equipment, process pipelines, cracking units | GB/T9948, ASTM A106, EN10216 |
| Power Generation | Boilers, steam systems, high temperature piping | GB/T5310, DIN17175, EN10216-2 |
| Oil & Gas | Process piping, pressure systems, transportation pipelines | ASTM A106, ASTM A333, EN10216 |
| Low Temperature / Cryogenic | LNG systems, refrigeration equipment, cryogenic storage | ASTM A333 Grade 1/6 |
Technical Data Table — Quick Reference
| Product | Standard | Grade | Primary Application |
|---|---|---|---|
| General Pressure Tube | EN10216-1 | P195/P235 | General Pressure Equipment |
| Pressure Tube | EN10216-2 | P235GH | Boiler / Pressure Vessel |
| Pressure Tube | EN10216-2 | P265GH | Higher Strength Equipment |
| Heat Resistant Tube | DIN17175 | ST35.8 | Steam / Thermal Systems |
| Structural Tube | DIN17175 | ST52 | Mechanical Engineering |
| High Temp Pipe | ASTM A106 | Grade A/B/C | Process Piping / Industrial Plants |
| Low Temp Pipe | ASTM A333 | Grade 1/6 | Cryogenic / Low Temperature Systems |
| Chemical Equipment Tube | GB/T6479 | 10, 20, 16Mn | High Pressure Chemical Equipment |
| Petroleum Tube | GB/T9948 | 10, 20, 15CrMo | Refining / Cracking Equipment |
| High Pressure Boiler Tube | GB/T5310 | 20G, 15CrMoG, 12Cr1MoVG | Power Generation / High Temp |
Customization Support
We support customized pressure tube solutions for specific project requirements:
✅ Custom outside diameters and wall thicknesses
✅ Special heat treatment conditions (normalized, annealed, quenched & tempered)
✅ Non-standard lengths and end finishes (plain / beveled)
✅ Additional testing or third-party inspection (SGS, BV, TÜV, DNV)
✅ Small trial orders before mass production
✅ Customized packaging and labeling with project marking
✅ Special material requirements (chemical composition tailoring)
Why Choose Hengzhihui for Pressure Tubes?
| Advantage | Description |
|---|---|
| European Standard Experience | Proven capability in EN10216, DIN, ASTM, and GB specifications |
| Application Understanding | We understand customer requirements beyond material names — we consider operating conditions and end-use |
| Reliable Manufacturing Network | Working with experienced Chinese manufacturers with rigorous quality systems |
| Comprehensive Documentation | Full EN 10204 Type 3.1 certification with material traceability |
| End-to-End Export Support | Technical communication → documentation → packaging → logistics coordination |
| Flexible Sourcing | Competitive pricing through optimized supply chain management |
Packaging & Delivery
| Packaging | Standard export bundle packing with steel strips. Protective plastic caps on both ends. Wooden cases for precision tubes upon request. |
|---|---|
| Container Loading | 20ft / 40ft containers, with careful loading to prevent damage during transit |
| Port of Loading | Shanghai / Ningbo / Guangzhou (flexible based on factory location) |
| Delivery Time | 15–30 days after order confirmation, depending on quantity and specifications |
FAQ
| Question | Answer |
|---|---|
| What pressure tubes does Hengzhihui supply? | We supply EN10216-1, EN10216-2, DIN17175, ASTM A106, ASTM A333, GB/T6479, GB/T9948 and GB/T5310 pressure tubes. |
| Can you supply P235GH and P265GH tubes? | Yes. We supply EN10216-2 P235GH TC1/TC2 and P265GH TC1/TC2 tubes according to customer requirements. |
| What is your tube size range? | Our seamless tube capability covers OD 6mm to 204mm. |
| Are inspection certificates available? | Yes. We provide EN 10204 Type 3.1, Mill Test Certificate, and complete inspection reports. |
| Do you support European customers? | Yes. Our experience includes international customers requiring ASTM, EN and DIN standards. |
| Can you provide third-party inspection? | Yes. Inspection can be arranged by SGS, BV, TÜV or other agencies per customer requirements. |
| What is the difference between EN10216-1 and EN10216-2? | EN10216-1 is for general pressure applications at ambient temperatures; EN10216-2 is for elevated temperature service (boilers, pressure vessels). |
Send Inquiry
To receive a tailored quotation for your pressure tube project, please provide:
Standard and grade (e.g., EN10216-2 P235GH / ASTM A106 Grade B / DIN17175 ST35.8)
Outside diameter and wall thickness
Total quantity (pieces or metric tons)
Required length and end finish (plain / beveled)
Operating temperature and design pressure (if available)
Any special testing or certification requirements
📩 Click "Send Inquiry" or contact us directly with your specifications — we will respond within 24 hours.
Contact for Quote
Please provide: Steel Name / OD / WT / Length / Quantity
📧 Email: yjhtrade@gmail.com
📞 WhatsApp: +86 15106174543
🌐 Website:
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