The adjustable steel support (steel pillar) consists of a lower casing and an upper cannula and an adjustable device. The upper cannula is drilled with equally spaced pin holes, and the upper part of the casing is provided with an adjustable wire sleeve, which can flexibly adjust various columns. Height, easy to install, especially suitable for residential building formwork support system.
The adjustable steel support (steel pillar) is similar to the form of the GH-type tool-type steel pipe column introduced in the Safety Specification for Building Construction Formwork (JGJ162-2008), and is improved to change the original pipe wall thickness from 2.4--2.5mm to 3.0. Mm, tested by the National Construction Engineering Quality Supervision and Inspection Center, the eight sets of steel support for inspection are 3m long and the applied load is 20kN without damage.
Structure and manufacturing process of adjustable steel support: 1. Material: Q235 steel pipe,?
2. The specification of the casing is 60*3mm, and the length of the thread on the top of the casing is 200mm. The thread processing adopts the cold rolling processing process, the rectangular thread rolling depth is 3mm, the actual thickness of the rolling is not less than 4mm, and the slot size is 145*14mm. 3. The upper cannula specification is 48*3mm, and the diameter of the A13mm pin hole (the plug diameter A12mm) is made on the rotating bed. ? 4, the adjustment nut is made of ball-milled cast iron, which has high strength and toughness. ?
5. The welding of the adjustable steel supporting steel bottom plate and the steel top plate and the pipe is welded by a double-oxidation welding machine.
