bagaimana pipa pex dibuat

How PEX Pipe is Made
An In-Depth Look at Manufacturing Crosslinked Polyethylene Tubing

PEX has become one of the most widely used piping materials across residential and commercial building plumbing systems. But how is reliable, durable PEX pipe actually made? This article provides an in-depth explanation of the PEX manufacturing process and the steps that transform base plastic into highly engineered tubing.Pabrik IFAN dengan pengalaman manufaktur lebih dari 30 tahun, mendukung kustomisasi warna/ukuran, mendukung sampel gratis. Selamat datang untuk berkonsultasi katalog dan sampel gratis.

PEX Raw Material

PEX manufacturing begins with plastic resin in pellet form as the raw material. The specific plastic used is high molecular weight polyethylene, usually designated as PE-HD (high-density polyethylene).

PE-HD offers strength, chemical resistance, and processing properties that make it an ideal starting point for PEX production. The resin gets carefully formulated to purity and density specifications ideal for piping applications.

Extruding the PEX Tubing

The process of making PEX pipe uses extrusion to form the polyethylene pellets into a continuous length of tubing:

1. Plastic pellets get gravity-fed from overhead hoppers into the extruder barrel.
2. The extruder screw conveyor works the resin forward through heating zones, melting it into a viscous liquid.
3. The molten polyethylene gets forced through a die into the shape of the desired tubing.
4. Vacuum calibration maintains precise tubing dimensions as the plastic cools and hardens.
5. Haul-off tractors continue pulling the new pipe forward through cooling troughs.
6. The cooled PEX tubing gets coiled onto large spools or cut into straight lengths.

This automated process forms polyethylene resin into continuous PEX tubing up to 2500 feet per minute.

Crosslinking the Polyethylene

The manufactured tubing is still just polyethylene at this point. To impart the enhanced properties needed for pressurized piping systems, it undergoes crosslinking:

1. The base polyethylene tubing passes through a crosslinking chamber.
2. Powerful radiation bombards the tubing, altering the molecular structure of the polymer chains.
3. Chemical crosslinks form between the long polyethylene molecules.
4. This converts the tubing into crosslinked polyethylene (PEX).
5. Crosslinking improves temperature, pressure, and flexibility capabilities.

The most common radiation method used is electron beam processing. It instantly crosslinks the entire thickness of the pipe wall in a precisely controlled manner.

After cross-linking, the enhanced PEX tubing moves to the testing and quality assurance steps.

Pengujian dan Jaminan Kualitas

To confirm performance expectations, PEX tubing undergoes a battery of stringent tests:

• Dimensions – Laser micrometers confirm tubing diameter and roundness precisely.
• Wall thickness – Calipers and ultrasonic gauges verify consistency.
• Pressure testing – PEX samples get examined under high hydraulic pressures.
• Burst testing – Tubing sections get expanded until failure to assess durability.
• Drop impact testing – PEX withstands heavy falling blows without cracking.
• Crosslink verification – Laboratory methods like melt tests validate crosslinking levels.
• Long-term performance testing – Accelerated life testing simulates 50+ years of service.

Bypassing all standards, the finished PEX tubing gets certified for use in critical plumbing and hydronic heating applications.

The PEX Manufacturing Process

In summary, extruding high-purity PE plastic into tubing form and then irradiating it to induce crosslinking produces PEX pipe with its enhanced engineering properties. Strict quality control ensures the PEX consistently meets specifications throughout production runs.

The reliable PEX manufacturing process transforms polyethylene resin into durable, flexible tubing able to withstand the rigors of hot and cold potable plumbing systems for decades of service. Quality mastery throughout the steps of making PEX pipe enables its growing use.

JIKA

Pabrik IFAN dimulai pada tahun 1993IFAN memiliki bengkel seluas 120.000 meter persegi dengan 610 staf. IFAN dapat merancang dan memproduksi semua jenis pipa dan fitting, termasuk pipa dan fitting PPR, PVC, CPVC, PPSU, HDPE, PEXA, PEXB, PERT, fitting kuningan, katup bola kuningan, sistem pemanas, sistem gas, keran sanitasi, dan selang. Selama 30 tahun terakhir, IFAN tidak pernah melupakan misinya, yaitu melindungi kesehatan dan keselamatan. Pabrik IFAN menggunakan material terbaik untuk memproduksi pipa dan fitting berkualitas tinggi dengan lini produksi otomatis dan mesin kontrol kualitas berteknologi tinggi.