Power2SME Pvt Ltd

Udyog Vihar, Gurugram, Haryana

Steel Rectangular Tubes are also referred to as Hollow Structural Sections. This is a terminology most commonly used in Engineering and Construction. The manufacturing process of Steel Rectangular Tubes does not vary greatly from that of Square Rectangular Tubes or Pipes. First, a flat steel plate is moulded to change shape. The edges are refined and readied for welding. The edges are then welded to form the mother tube. The mother tube is then passed through a series of shaping strands. These strands turn the mother tube into the desired shape (steel or rectangular). Steel Rectangular Tubes conform to the American ASTM A500 or ASTM A1085 Standards. To improve the fire rating and robustness of Steel Rectangular Tubes, it is usually filled with concrete.

Steel Rectangular Tubes are used in various industries and in different applications. Common Industrial Applications include where extreme temperature, pressure and destructive tolerance is required. Common Domestic Applications include Kitchen Appliances and Gas Pipes. The Construction and Engineering Industry uses Steel Rectangular Tubes for welded steel frames and steel scaffolding. Automobile manufacturers use them for internal vehicle parts like the Fuel Injection system and Vehicle Control System. More applications include manufacture of Furniture, Display Stands, Shop Fittings, Clothes Rails, Storage, Racking, and General Steel Fabrications. Steel Rectangular Tubes are best suited for mechanical uses because it has close tolerance, good finish, and dense structure.

Tin Stabilisers are generally used as heat stabilisation for PVC. They constitute a central tin atom surrounded by Alkyl or Acid groups. Commercial Tin Stabilisers have mono and di alkyl salts mixed in varying ratios. Tin Heat Stabilisers for PVC can be classified into two categories namely, Thio Acid half-Esters, and Dicarboxylic half Esters. Thio Acid half-Esters are also known as Thiotins or Mercaptides. Dicarboxylic half Esters are also called Maleates or Carboxylates. Tin Stabilisers are mostly based on Methyl, Butyl, or Octyl groups. Tin Stabilisers are available both in Solid as well as Liquid form. Solid forms may be Paste or Solvent-free form. Tin Stabilisers have wide applications in plasticized PVC because they can be easily handled and integrated with liquid plasticiser dosing systems.

Usage

Tin Stabilisers used in PVC compounds are used for making sheets, bottles, profiles, injection moulded fittings, credit cards, blister packs, food containers, and display trays. They are also used for making PVC Pipes and Fittings, PVC Films, Hose Pipes, and Soft Tubes. Other applications include manufacture of Crystal PVC sheets, blow moulding, calendaring, extrusion etc. Tin Stabilisers are not suited for skin contact which is why they are strictly excluded from applications where skin contact is present, even if there is a need. However, there are some food applications of Tin Stabilisers, never exceeding 2%. Tin Stabilisers are an excellent heat stabiliser replacement for toxic heat stabilisers that were previously used in PVC compounds. Tin Stabilisers are also mixed with Vinyl Polymers to create finished products.

PVC Stabilisers are added either directly into PVC or in combination to prevent oxidation, chain scission, uncontrolled recombination, and cross-linking reactions caused by photo oxidation. Essentially, they protect PVC from the harmful effects of extreme temperature and ultraviolet radiations. PVC Stabilisers are of different types like Heat Stabilisers which are mainly used in Construction projects. Antioxidants are PVC Stabilisers that prevent oxidation of PVC from taking place due to atmospheric oxygen. Hindered amine light stabilizers are PVC Stabilizers that scavenge radicals produced by weathering. The next type of PVC Stabilisers are UV absorbers. They dissipate energy absorbed by UV rays. Antiozonants are PVC Stabilisers that prevent degradation of materials cause by Ozone gas present in the atmosphere. Lastly, PVC Stabilisers are available in the form of Organosulfur Compounds that thermally stabilize polymers.

Usage

PVC Stabilisers are mainly used in the manufacture of Pipes and Fittings, Window Profiles, Rigid and semi-rigid films, wires and cables, coatings, and flooring etc. PVC Stabilisers are available in the form of Heat and UV Stabilisers, Flame Retardants, Smoke Suppressants, Plasticizers, Processing Aids, Impact Modifiers, Thermal Modifiers, Pigments, and Fillers that are added to PVC for strengthening purposes. The applications of a PVC Stabiliser are in all places where PVC is used. PVC is widely used in construction material, medical devices, childrens toys, protective housing for cables and wires, manufacture of credit cards etc. PVC is also used in rubber seals, vinyl fabrics, and automotive parts. Impact Modifier/Processing Aid PVC Stabilisers provide softness and flexibility that PVC does not normally have.