Safety warning sign: "You must wear a seat belt" "Must wear insulated gloves" Wholesale national 24-hour direct sales hotline 0311-89852856 Manager Wang online QQ
Characteristics of PVC materials
It is one of the most productive plastic products in the world. It is inexpensive and widely used. The polyvinyl chloride resin is white or light yellow powder. Different additives can be added according to different purposes, and polyvinyl chloride plastic can exhibit different physical properties and mechanical properties. Polychlorinated
A variety of hard, soft and transparent products can be prepared by adding an appropriate amount of plasticizer to the vinyl resin.
The density of pure polyvinyl chloride is 1.4 g/cm3, and the density of polyvinyl chloride plastic parts to which plasticizers and fillers are added is generally 1.15-2.00 g/cm3.
Phase signage, anti-shock warning sign, traffic safety signage, electric enamel signage traffic safety signage, sales safety signage, prohibition safety signage, warning safety signage, electric safety signage, power pole number plate, valve signage , protective line signage, optical cable signs, communication signs, oil and gas special safety signs, occupational disease notification cards, communication signs, department cards, aluminum plastic signs, plexiglass signs, electrical signs, machinery, car nameplates, motorcycle nameplates, Electric vehicle nameplates and signs, equipment signs, metal signs, inventory cards, material cards, material cards, gold cards, badges, work plates, plastic folding signs. There are PVC self-adhesive, PVC plastic, aluminum, enamel, stainless steel, copper, luminous, reflective and other materials to meet the needs of different users of various signs. This product is resistant to acid and alkali and corrosion. It will be sprayed in the wind and will not fade. Hongan production and trade of various meter boxes and power meter box locks, seals, seals, power safety tool cabinets, locks, transformer protective covers, fault indicators, reflective film, tailgate, junction box, warning tube, safety Fence, fence, fence, insulation ladder, high and low voltage grounding wire, grounding rod, multi-purpose insulated operating rod, sound and light electroscope, bird repeller, foot buckle, seat belt, pulley, tensioner, pay-off frame, insulation Shoes, insulated gloves, safety ropes, lightning arresters, explosion-proof disconnectors, disconnectors, drop fuses, insulators, instrumentation series, line fault indicators, electrical special tools series, electric power fittings series, telecommunications equipment series, distribution safety shields And so on. It should be placed in factories, mines, construction sites, power facilities, transportation and other places where safety should be paid attention to. It is a good assistant for enterprises and institutions to do safety management and safety production knowledge publicity work. Our factory has consistently adhered to the tenet of "quality first, reputation first, good service and reasonable price".
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Although there are many types of tapping screws, they all have the following similarities:
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping Screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.
Round head Tapping screw,hex tapping screw,flat head tapping screw,pan head tapping screw,truss head tapping screw
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