MADE FROM PE, PP, PVDF, ECTFE, FEP, PFA
We produce round bars, welding rods and plastic sheets on our state-of-the-art production systems. AGRU's comprehensive product portfolio, modern warehouse and capable logistics offer fast, technical solutions for any application globally.
Semi-finished products made of thermoplastics are an excellent and durable solution for modern, premium apparatus and tank construction, and manufacturing of wear-resistant products. In the chemical and heavy industries, and in plant construction, a variety of requirements exist for semi-finished products in terms of acid and lye resistance, temperature changes and low static charge in areas with a risk of explosion (ATEX).
This explains why plastic sheets, welding rods and round bars made of materials such as PE, PP, PVDF, ECTFE, FEP and PFA have been successfully used for years in this segment in particular. AGRU's latest development for apparatus and tank construction is sheets and welding rods made of PE100 RC, which is characterized by excellent stress crack resilience.
Our manufacturing methods include a variety of proven joining technologies such as extrusion and hot gas welding, as well as butt welding.
Other characteristics of semi-finished products made of PE 100 and PE 100-RC include the following:
For decades now, semi-finished products made of PE 100 and PE 100-RC black have proven to be reliable when used outdoors. The addition of special carbon black types (approx. 2 %) ensures light and weather resistance. Semi-finished products made of PE 100 and PE 100-RC black are unaffected by natural UV radiation.
Electrically conductive polyethylene (HDPE-el ESD) is a material that conducts electrical charges, because conductive particles (carbon black) have been added to it. Semi-finished products made of this special material have integrated stabilisers that counteract the effects of natural UV light and are therefore also suitable for outdoor applications. Due to their special electrical properties, these semi-finished products are particularly well suited to transporting highly flammable media or dusts. HDPE-el ESD can also be used in areas where sparking from electrostatic charging needs to be prevented due to explosion protection requirements.
To comply with purity requirements, AGRU offers sheets made of natural HDPE as well.
It is also characterised by a very good chemical resistance. Polypropylene can be used in temperatures of up to 95 °C. However, below freezing point PP is very sensitive to impact (use at temperatures below - 5 °C should be avoided). Semi-finished products made of PP are also characterized by the following:
PP is the ideal material for use in pickling plants, the chemical industry, and also for extremely aggressive waste water, as chemicals are used at high temperatures in these areas. The AGRU product range includes various PP polymer types:
All three propylene types are thermally stable, perfectly compatible, and can be easily welded by all standard welding procedures as per DVS 2207. Semi-finished products made of grey polypropylene are not UV-stabilised and therefore need to be protected accordingly.
Low-flammability polypropylene (PPs) is a PP homopolymer, which is equipped with a flame retardant. Consequently, PPs can be classified as a material with higher flame resistance according to DIN 4102 and UL94. Low-flammability and electrically conductive (PPs-el ESD) polypropylene is made of PP copolymer and is equipped with both flame-resistant and electrically conductive / anti-static properties. The surface resistance is ≤106 Ohm, which means that electrostatic charging is prevented. Semifinished products made of polypropylene natural and white (made of PP-H) complete our extensive range of PP semi-finished products.
PVDF can be processed without additives, which gives it excellent leaching behaviour. PVDF is manufactured under controlled purity conditions using carefully selected raw materials. Areas of application for these products include pipeline systems, storage and transportation tanks, and apparatuses requiring high media purity and leaching behaviour standards.
PVDF can be equipped with electrically conductive particles especially for the electrical industry and explosion-proof areas. The conductive PVDF-el ESD (electrically conductive or electrostatic discharge) can be manufactured in sheets, rods, pipes, and welding rods and has a lower surface resistance, which in turn prevents electrostatic charging.
PVDF Flex is an excellent alternative to well-known, conventional fluoropolymers. When it comes to processing, important rationalisation effects can be achieved through increased flexibility, especially in the case of bonded to steel linings, but also in the case of confined spaces or small radii.
An FRP-reinforced liner pipe consists of the inner liner pipe, the outer FRP-reinforcement and the interface in between, where the bonded connection between the materials is established. FRP reinforced liner pipes have an equal constructive setup of the FRP-duallaminates used to build tanks, scrubbers, columns, reactors and other equipment.
The liner pipe serves for the protection against chemical attack and permeation, the outer FRP reinforcement is responsible for the mechanical strength and bears all loads. Typical wall thicknesses for liner pipes made of melt-extruded fluoroplastics are between 2.3 mm and 5 mm (depends on the material and the diameter). This is in contrast to the thermoplastic pressure pipes, which usually have greater wall thicknesses. While for pressure pipes used without reinforcement, the opperation pressure is defined by the polymer itself, the pressure rating of the liner pipes is given by the FRP reinforcement.
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Find more information about our AGRU liner pipes made from PVDF, ECTFE, FEP and PFA here.