I. Product introduction of PVC-U water supply pipelines

I. Brief Introduction

Ginde has imported the most advanced technologies and equipment from Europe. We adopt high quality PVC resins and imported processing additives as the raw materials, with a scientific formulas to produce PVC-U supplying water pipes and fittings. Sales service net of our company products is all over China. It's one of Asia largest pipes production base.

Our company owns 36 PVC-U production lines and over 100 injection-molding machines to produce fittings. Our products are of high quality, have various specifications and have passed strict inspections. Our products have passed the ISO 9001 Quality Management System Certificate and ISO 14001 Environmental Management System Certificate. Our products match the GB/T 10002.1-1996 and GB/T10002.2-2003 standards respectively.

Properties of PVC-U water supply pipelines

a)Light weight: weight in unit length is only 1/6 of the cast-iron pipes.

b)High strength: tensile strength comes to above 45MPa.

c)Less resistance: wall of the inner layer is smooth, prevents scum buildup. The water pressure and discharge of PVC-U pipe is 30% lower than cast pipes in the same diameter, and it can save the cost of discharge power.

d)Corrosion resistance: it has the excellent resistance to the corrosion caused by acid, alkaline, chemical and electricity. Stains will not occur.

e)Simple installation: connect easily with rubber rings. It is easy to carry out and seals well.

f)Long lifespan: under the normal working pressure, the lifespan reaches to 50 years.

g)Sanitary and non-toxic: it accords with the drinking water standard; the water is conveyed without secondary pollution.

h)Low cost: with lower cost of installation, transportation and raw material, the total cost of the whole engineering makes the cost 30% lower than cast pipes.

2.Major technical indicators of PVC-U water supply pipeline

II. Production technique of PVC-U water supply pipelines

1. Production equipment

The plastics molding extruder (for tubing) imported from Germany KraussMaffei Company is designed and manufactured with the most advanced technology at present in the world, which owns advanced performances such as high-speed extrusion molding, automatic cut-of-length, on-line hot-melt tube end expansion and PC software controlled production processes.

The PC software (C4) for controlling the production processes can be inputted and set in advance according to process specification, start-up time, temperature control criterion and other conditions during production operations. Meanwhile, all the modification of running speed, melt pressure, extrude output, torque load and regulations of equipment motor and screw rod is automatically monitored, recorded, stored for reading; it also can alarm dangerous conditions, automatically shut down and display suggestions or correcting instructions on the screen (it can be read and used with three languages). Therefore, it can guarantee fundamentally equipment in good condition as well as normal operation of production processes.

Advanced mechanical structural design adopts Plano conic twin screw with slenderness ratio of 36D, perfectly integrated with scientific and special compression ratio process technological design and mechanical structure. It owns prominent performances such as secondary air exhaust, repeated compression, moderate melting, high-speed extruding production process. Meanwhile, it is equipped with large mixing equipment imported from Germany Reimelt, which owns the functions of automatic metering and convey, dust-free seal and uniform mixing and dispersing; therefore it can guarantee the continuous process of production automatically.

2.Raw material

PVC resins are adopted as the carriers; they own the high quality performance such as accurate response to temperature, timing melt and rapid absorption of additives when reducing the intermolecular gravitational interaction of resins. Meanwhile, our company has adopted the world top brand complex thermal stabilizer – German “BEAR” which can capture, inhibit, absorb and neutralize emitted hydrochloride, make double-bond addition reaction with polyene and replace active and unstable atom chlorine in molecules. Therefore, catalytic degradation and oxygenolysis of resins under molting state can be effectively and scientifically controlled.