What are the main uses and main classification of T bolts?
Material: 45# Steel C1045 S45C
Joint Bar,Fish Plate,Rail Joints,Rail Joint Bar TAICANG ZHONGBO RAILWAY FASTENING CO., LTD. , https://www.railfastener.com
T-bolts are actually a big family. What is T-bolt?
The T-bolt literally means that the bolt's shape resembles an uppercase English letter “Tâ€, and it has its reputation.
Since the T-bolts (some are also called T-screws or t-screws) are a big family, they must be full of children! In the work often encounter many T-bolt inquiries, the problem is strange; Xiao Bian as a senior T-bolt manufacturing experts, today we will specifically introduce the main classification of T-bolts and related thoroughfare:
First, classified by purpose
1.1 T-type bolts for Hafin channel steel, the most commonly used is 45 # steel, forged, quenched and tempered; also useful for low carbon steel, more useful alloy steel, stainless steel 304 and 316; according to actual needs Select materials and mechanical properties grades, surface treatment with chemical blackening, electro-galvanizing, hot-dip galvanizing, Dacromet, mechanical damascene, etc.
1.2 T-bolts for aluminum alloy profiles, also known as hammerhead bolts, are made of SUS304 stainless steel and medium carbon steel. The surface of medium carbon steel T-screws can be galvanized or nickel-plated and plated with Dacromet, carbon steel T-bolts. Material is 1045 carbon steel, red satin production process, after heat treatment grade is 8.8, generally mold platen bolt, T-type screw can be directly placed in the slot, the installation process can automatically locate the lock, T-bolt general When used with a flange nut, it is a standard attachment fastener for corner fittings. T-bolts are selected based on the groove width of the profile.
1.3 T-bolts for water supply system,
1.4 T-bolts for T-channels, generally referred to as national standard GB37-88
1.5 T-bolts for construction fasteners are mainly used for locking and fixing with scaffoldings for construction. The main reason is that low-carbon steels are produced in large quantities, and generally they are fitted with a flange nut. The most used are the M12, M14 and American Standard's UNC1/2-13 and British Standard BSW1/2-12 teeth.
Second, according to the standard model to divide:
2.1 The national standard GB37-88T slot bolts, this standard specifies the thread size of M5-M48 Class B T-slot bolts. This national standard stipulates that the diameter is less than or equal to the size of M39, the mechanical performance level is generally 8.8, and the mechanical performance level with the diameter larger than M39 is generally agreed with the customer; and the standard states: “Because of the structure, the T-slot is used with bolts. Do not carry out helium load and headstock bond strength test." This standard specification has M5, M6, M8, M10, M12, M16, M20, M24, M30, M36, M42, M48 a total of 12 specifications, the shortest length 25, the longest 300.
Surface treatment is mainly chemical blackening and galvanized passivation.
2.2 Machinery Industry Standard JB/T 8007.2-1999 | T-slot quick-release bolts for machine tool parts and components;
2.3 German standard DIN787,
2.4 German standard DIN186 T-type square neck bolts;
2.5 German standard DIN188T double neck bolt;
2.6 German standard DIN261.
Specification: America used 115 RE, 132 RE; Europe, Africa and Asia used UIC54, UIC60; South America used TJ45, TJ57 and the UK used BS60, BS75;
Protection: Plain (oiled), hot dip galvanized, white zink plated, yellow zink plated, black, dacromet, geomet or others specified by the customers
They are used for connecting rail tracks at certain length.
We supply standard rail joint bars to North America, South America, Europe, Southeast Asia, standard refers to GB/TB, UIC, BS, AS, AREMA, JIS, GOST, DIN etc.
We also manufacture fishplate bolts with nuts and lock Washers according to standard specifications.
They are bundled and palleted for ocean delivery.
Zhongbo Railway Fastening Company is a leading Chinese manufacturer of rail fastening and rail joint bar.
Zhongbo, as a specialized rail fastener manufacturer, provides a complete line of products, including rail fastening, anchor, rail joint, rail clip, rail screw, anchor bolt, Rail Clamp plate, rail fishplate, and fishplate bolt for connecting rail tracks.
We also make rail fastenings for crane rail and elevator guide rail, along with other related products. We manufacture according to GB/TB (Chinese national standards and railway standards), AREA, UIC, BS, DIN, ASTM, and AS standards.
Our products are mainly made through hot forging.
The threads of rail screw spikes are made by hot rolling with special threading machines.
We produce metric threads, BS, BSW, TR thread, or round threads.