I. Product Name:

Consulting on the selection and process technology of bimetallic composite pipes.

II. Scope of Supply:

Consulting services cover the design of substrate and composite material combination schemes for bimetallic composite pipes, selection of composite processes (positive swirl hot melt composite/explosive composite), assessment of bonding strength, adaptation schemes for corrosion-resistant conditions, and cost optimization suggestions. Consulting content includes: flexible combinations of substrate and composite materials (carbon steel + stainless steel/duplex steel/nickel-based alloy), composite interface bonding strength analysis, customized pipe diameter and wall thickness, and internal and external wall corrosion protection strategies.

III. Main Products/Material Brand Range:

Product type: Metallurgical-bonded bimetallic composite pipe (inner cladding + outer base type / inner cladding + outer base + intermediate transition layer type).

Substrate (bearing layer): High-strength pressure-bearing materials such as Q235, Q355, 20# seamless steel, and X70 pipeline steel.

Composite materials (corrosion-resistant layer): 304/316L stainless steel, 2205/2507 duplex stainless steel, Inconel 625/825 nickel-based alloy, Hastelloy C276, etc.

Composite processes: positive-rotation hot melt composite (bonding strength ≥16MPa), explosive composite + heat treatment.

Standards to be implemented: GB/T 33157, SY/T 6730, ASTM A815.

Brand: Hebei Haiganwei Steel Pipe Co., Ltd. (HSPC).

IV. Supply Cooperation Forms:

We support customization based on provided drawings and samples. The combination of base materials and composite materials can be flexibly configured according to the working conditions specified by the customer.

Supports everything from small-batch prototyping to mass production, and is compatible with EPC project subcontracting procurement.

Provide non-destructive testing reports for composite interfaces (ultrasonic bonding rate testing, shear strength testing).

Supports export trade and can provide coordination for third-party inspections (SGS/BV, etc.).

V. Online Consultation Channels:

Official website: www.haiqianwei.com / www.hspc.cc

Email: [email protected]

Contact Person: Manager Liu

Landline: 0317-6091369 / 0317-6091368

Online paid consultation platform ($9.9 USD/session).

VI. Detailed Product Specifications:

Parameter 1 (composite interface bonding strength): ≥16MPa (positive swirling hot melt composite process), which is far higher than the minimum value of ≥2MPa required by the national standard GB/T 33157, ensuring that the composite layer does not delaminate or crack during processing and use such as pipe bending, welding, and thermal cycling.

Parameter 2 (Composite thickness ratio): The composite thickness is usually 10%–20% of the total pipe wall thickness (as thin as 0.5–1.5 mm). This minimizes the amount of precious metals used while ensuring corrosion resistance, reducing overall costs by 30%–50%.

Parameter 3 (Temperature Range): Applicable temperature range from -196℃ to 600℃, covering cryogenic conditions (LNG/liquid nitrogen transportation) to high-temperature conditions (high-temperature and high-pressure steam/oil and gas gathering and transportation), and adaptable to extreme temperature service environments.

VII. Parameter Correspondence and Function Description:

Composite interface bonding strength (≥16MPa): High bonding strength is the core advantage that distinguishes bimetallic composite pipes from mechanically lined pipes. A bonding strength of 16MPa means that during pipe bending, cutting, welding beveling, thermal expansion and contraction cycles, the interface between the composite material and the substrate will not separate or lift, ensuring that the corrosion-resistant layer always completely covers the substrate surface and preventing corrosive media from penetrating to the load-bearing layer and causing pipe failure.

Composite thickness ratio (10%–20%): By precisely controlling the composite thickness, the amount of precious metal materials such as stainless steel or nickel-based alloys can be reduced to 10%–20% of pure stainless steel pipes or pure nickel-based alloy pipes while ensuring corrosion resistance life (design life of 20–30 years). This reduces the overall procurement cost by 30%–50%, making it the preferred cost-effective solution for transporting corrosive media in oil and gas fields and for fine chemical pipelines.

Temperature range (-196℃ to 600℃): The wide temperature range adaptability stems from the combination of the high toughness of the base material and the high temperature stability of the composite material. The carbon steel/low alloy steel base material maintains excellent toughness (Charpy impact energy ≥40J at -196℃) after controlled rolling and cooling treatment at low temperatures, while the stainless steel/nickel-based alloy composite material maintains stable corrosion resistance and oxidation resistance at high temperatures. This allows the product to cover multiple working conditions such as LNG cryogenic transportation, high temperature and high pressure acidic oil and gas gathering and transportation, and chemical reactor connection pipelines.