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OEM β-PPH Fittings Supplier

About us
Jiangsu Leiting Precision New Materials Co, Ltd
Jiangsu Leiting Precision New Materials Co, Ltd
Jiangsu Leiting Precision New Material Co., Ltd. (formerly Jiangsu Haobo Plastic Industry Co., Ltd.) is China OEM β-PPH Fittings Supplier and Wholesale β-PPH Fittings Factory, located at No. 55 Haichuan Road, Dongtai City High-Tech Zone, Jiangsu Province. Established in 2008, the company now occupies an area of 19,980 square meters, with a total investment of 110 million RMB in its new facility.
We focus on pipeline applications for the solar panel, semiconductor, chemical, ironmaking, environmental protection, biochemical, aquarium/marine, and pharmaceutical manufacturing industries. Our goal is to establish ourselves as a high-tech enterprise integrating the production and sales of various valves, pipe fittings, and pipes, while driving technological innovation in the valve industry. As of December 2024, we hold 81 patents, including 36 invention patents, 36 utility model patents, and 9 design patents.
Guided by our R&D philosophy of "Technology Creates the Future," our quality principle of "Quality Creates the Market," and our marketing ethos of "Brand Creates Value," we remain committed to innovation and providing comprehensive, high-quality services to global customers.
Certificates
  • Honour Certificate for Integrity Managers
  • Honour Certificate for Integrity Entrepreneurs
  • AAA-level integrity management demonstration unit
  • AAA corporate credit rating certificate
  • AAA quality service integrity unit
  • AAA-level contract-abiding and trustworthy enterprise
  • AAA corporate credit rating certificate
  • Lei Ting National Inspection Report PPH Elbow D63
  • Lei Ting National Inspection Report PPH tube D63
  • A plug-in positioning butterfly valve
  • A resiliently driven compensating union valve
  • A pressure-locking butterfly valve
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β-PPH Fittings Industry knowledge

What are the key points of installation and welding processes for β-PPH Fittings?

1. Surface Cleaning and Cut Quality

Before installation, oil, dust, and rust must be thoroughly removed from the surfaces of pipes and fittings to ensure a clean contact surface.

Pipe ends must be cut squarely using a specialized cutting tool to ensure a perpendicular, burr-free end face for optimal interlocking strength.

2. Selection of Appropriate Connection Method

For β-PPH materials, two methods can be used: hot-melt welding (electrofusion) or adhesive bonding. Hot-melt welding is the most commonly used process, achieving a leak-free and reliable connection.

3. Key Welding Process Parameters

Heating Temperature: Generally controlled between 210℃ and 230℃ to ensure the material is fully softened without thermal degradation.

Pressure Holding Time: Maintain pressure for 8–12 seconds after heating to allow the melt to fully fill and form a uniform weld.

Cooling: Allow to cool naturally for at least 30 seconds after welding to avoid rapid cooling that could cause internal stress.

4. Quality Inspection and Leak Prevention Measures

After welding, conduct an airtightness test (such as helium leak detection or hydrostatic test) to confirm there are no leaks before putting the pipe into use.

Inspect the weld for bubbles, cracks, or incomplete fusion; re-weld if necessary.

How to select the specifications of β-PPH Fittings based on media type, working pressure, and temperature?

1. Media Corrosivity

For corrosive media such as strong acids and alkalis, thicker wall fittings or corrosion-resistant β-PPH modified materials should be used to resist chemical attack.

For neutral or weakly corrosive media (such as pure water and steam), standard wall thickness fittings can be used.

2. Matching Working Pressure and Temperature

The long-term working temperature range of β-PPH pipes is -20℃ to +100℃, and the short-term maximum withstand temperature is 110℃. Increased temperature significantly reduces pressure resistance; the maximum working pressure (MOP) at 60℃ is approximately 50% of the nominal pressure. When selecting a pipe fitting, the design pressure (usually 1.25 times the highest working pressure) should be considered, along with a temperature correction factor, to ensure that the fitting does not exceed the material's pressure resistance limit under actual operating conditions.

3. Wall Thickness and Nominal Size

Select the appropriate nominal diameter (DN) and wall thickness (PN) based on the viscosity, flow rate, and system pressure drop requirements of the medium.

For high-pressure and low-temperature environments, PN16 and above with thicker walls are recommended; under normal temperature and pressure, PN10–PN12 is sufficient.

4. Influence of Installation Method on Selection

Hot-melt welding has relatively relaxed requirements on pipe wall thickness, but welding quality must be ensured; flange connections have higher requirements on pipe wall thickness and require matching with appropriate flange thickness and bolt specifications.