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Help CenterQ355B Lined & Clad Composite Pipe Bimetal Metallurgical Bonded Pipe for Corrosion & Wear Resistance
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Q355B Lined & Clad Composite Pipe
Bimetal Metallurgical Bonded Pipe for Corrosion & Wear Resistance
Product Overview
Our Q355B composite pipe consists of a base layer of Q355B carbon steel and an internal or external cladding layer of corrosion-resistant alloy (stainless steel, nickel alloy, or other material). The metallurgical bonding between layers ensures high strength, excellent corrosion resistance, and significant cost savings compared to solid alloy pipes.
Base Material: Q355B (equivalent to ASTM A572 Grade 50 / S355JR)
Cladding Material: 304, 316L, 2205, 825, 625, or as specified
Bonding Process: Explosive bonding / Roll bonding / Metallurgical bonding
✅ Cost-effective – Up to 60% cheaper than solid alloy pipe
✅ High strength – Q355B base provides excellent mechanical properties
✅ Corrosion resistant – Cladding layer resists chemical attack
✅ Full traceability – EN 10204 3.1 MTC provided
✅ Factory direct | Custom sizes & materials available
Key Specifications
| Parameter | Details |
|---|---|
| Standard | ASTM B898, GB/T 8165, or customer specification |
| Type | Lined pipe / Clad pipe / Bimetal composite pipe |
| Base Material | Q355B (Yield ≥355 MPa, Tensile 470-630 MPa) |
| Cladding Material | 304, 316L, 2205, 825, 625, 904L, Monel, Inconel |
| Cladding Thickness | 1mm – 8mm (or as specified) |
| Base Thickness | 4mm – 50mm |
| OD Range | 21.3mm – 1016mm (1/2″ – 40″) |
| Length | 3m – 12m (fixed or random) |
| End Finish | Plain / Beveled / Threaded |
| Bonding Method | Explosive bonding / Roll bonding / Metallurgical bonding |
Mechanical Properties – Q355B Base Material
| Property | Value |
|---|---|
| Yield Strength | ≥355 MPa (51,500 psi) |
| Tensile Strength | 470 – 630 MPa (68,000 – 91,000 psi) |
| Elongation | ≥21% |
| Impact Test | 27J at 0°C (standard) |
Q355B Equivalent Grades
| Standard | Grade |
|---|---|
| GB/T 1591 | Q355B |
| ASTM | A572 Grade 50 |
| EN 10025-2 | S355JR |
| JIS G3106 | SM490A |
Available Cladding Materials & Applications
| Cladding Material | Corrosion Resistance | Best Application |
|---|---|---|
| 304 / 304L | General oxidation & corrosion | Food processing, water lines |
| 316 / 316L | Chloride & pitting resistance | Chemical, marine |
| 2205 Duplex | Excellent chloride resistance | Offshore, desalination |
| 825 (Incoloy) | Acid & sour gas resistance | Oil & gas, refineries |
| 625 (Inconel) | Extreme high-temp corrosion | Chemical processing, aerospace |
| 904L | Sulfuric & phosphoric acid | Fertilizer plants |
Key Advantages
| Feature | Benefit |
|---|---|
| Q355B base strength | High load-bearing capacity |
| Alloy cladding layer | Superior corrosion resistance |
| Metallurgical bond | No delamination, no crevice corrosion |
| Cost saving | 40-60% less than solid alloy pipe |
| Weldable | Can be welded using standard procedures |
| Inspectable | NDT possible on both layers |
Applications
| Industry | Application |
|---|---|
| Oil & Gas | Sour gas pipelines, flow lines |
| Chemical Processing | Acid transfer lines, reactors |
| Marine | Seawater piping, desalination |
| Power Generation | FGD systems, cooling water |
| Mining | Slurry lines, abrasive service |
| Pharmaceutical | High-purity fluid transfer |
Composite Pipe vs Solid Alloy Pipe – Cost Comparison
| Pipe Type | Material Cost | Fabrication Cost | Total Cost |
|---|---|---|---|
| Solid 316L | 100% | 100% | 100% |
| Q355B + 316L Composite | ~45% | ~80% | ~55% |
💡 Savings: Up to 45% compared to solid alloy pipe!
Manufacturing Process
Surface preparation – Q355B base tube cleaned
Liner insertion – Alloy liner inserted into base
Explosive / Roll bonding – Metallurgical bond achieved
Heat treatment – Stress relieving
NDT inspection – Ultrasound & dye penetrant
Hydrostatic test – Pressure integrity
End finishing – Beveled or plain ends
Quality Testing & Inspection
| Test | Method | Coverage |
|---|---|---|
| Ultrasonic Testing (UT) | For bond integrity | 100% |
| Dye Penetrant Test (PT) | For surface defects | 100% |
| Hydrostatic Test | Pressure integrity | 100% |
| Tensile Test | Mechanical properties | Per batch |
| Hardness Test | Material verification | Per batch |
| Metallographic Examination | Bond interface | Per batch |
Processing Services (Available)
| Service | Description |
|---|---|
| Cutting | Precision cutting to length |
| Beveling | For welding preparation |
| Flanging | For end connections |
| Bending | Cold or hot bending |
| Welding | GTAW or SMAW with alloy filler |
Packaging & Shipping
| Item | Details |
|---|---|
| Packaging | Steel pallet or wooden crates |
| Protection | Anti-rust oil + plastic end caps + edge protectors |
| Marking | Stencil / label with material, size, heat number |
| Lead time | 15–25 days (stock), 30–45 days (custom) |
| Port | Tianjin / Shanghai / Guangzhou |
Why Choose Our Q355B Composite Pipe?
| Advantage | Description |
|---|---|
| Metallurgical bond guarantee | No delamination risk |
| Factory direct | Best pricing, no middlemen |
| Full traceability | EN 10204 3.1 MTC for both layers |
| Flexible cladding options | 304, 316L, 2205, 825, 625, etc. |
| In-house NDT | UT, PT, hydrostatic all in-house |
| Global export | Shipped to 30+ countries |
Contact for Quote
Please provide:
Base material : Q355B (standard)
Cladding material : _______
Cladding thickness : _______ mm
Base thickness : _______ mm
OD / NPS : _______
Length : _______ m
Quantity : _______ (m / tons / pieces)
📧 Email: yjhtrade@gmail.com
📞 WhatsApp: +86 15106174543
🌐 Website:
Reply within 24 hours.
FAQ
Q1: What is a composite pipe?
A: A pipe with two layers – a strong carbon steel base (Q355B) and a corrosion-resistant alloy cladding (304, 316L, etc.) bonded together.
Q2: Why choose Q355B composite pipe over solid alloy?
A: Cost savings of 40-60% while providing equivalent corrosion resistance.
Q3: Is the bond between layers reliable?
A: Yes. Explosive or roll bonding creates a metallurgical bond that will not delaminate under normal service conditions.
Q4: Can composite pipe be welded?
A: Yes. Standard welding procedures apply, using alloy filler material for the cladding layer.
Q5: What certifications do you provide?
A: EN 10204 Type 3.1 MTC for both base and cladding materials.
Q6: Do you offer third-party inspection?
A: Yes. SGS, BV, TUV available.
Q7: What is the maximum length?
A: Standard up to 12 meters. Longer available upon request.
Q8: Do you offer free samples?
A: 30cm sample available. Shipping fee applies.
Related Products
Q355B Carbon Steel Pipe – Base material only
Stainless Steel Clad Plate – For pressure vessels
Bimetal Composite Tube – For heat exchangers
Lined Pipe – Mechanical bond (lower cost)
Tags: Q355B Composite Pipe Clad Pipe Bimetal Pipe Stainless Steel Clad Corrosion Resistant Pipe
Quick Selection Guide
| Cladding | Thickness | Best For |
|---|---|---|
| 304 | 2-3mm | General corrosion |
| 316L | 2-5mm | Marine / chloride |
| 2205 | 3-6mm | Offshore / high chloride |
| 825 | 3-6mm | Sour gas / acid |
| 625 | 3-8mm | Extreme corrosion |
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