The construction of the technology node is the most important component of the space network structure. It has a direct impact on the overall mechanical performance of the grid structure and the production and installation of the grid, engineering cost and project schedule. Therefore, the discussion of nodes has always been an important topic in the study of grid structure.
The welded hollow bolt joint organically combines the structural mechanism of the bolt ball joint and the hollow welded ball joint, and is composed of a hemispherical shell, a cylindrical shell and a cover plate. Bolt holes are formed in the housing, and all the grid nodes are connected with the rods by high-strength bolts. The node has the characteristics of light weight and low machining precision, especially for the double-layer flat grid, which is more convenient for roof slope and on-site construction.
Its application has certain space and high economic benefits. The main structure of the welded hollow bolt joint is composed of a thick shell with a regular shape, a cover plate, a high-strength bolt, an inner and outer gasket and a cone head. The size of the spherical shell is determined according to the geometrical dimensions of the other components. Generally, the spherical shell is a small hemisphere with a radius larger than the plane radius of the cylindrical shell, and the inner side of the end of the cylindrical shell is cut to facilitate node installation.
Parts such as the joint shell, cover plate and gasket are all made in the factory, which is convenient for mechanized mass production and quality assurance. The cone head and steel pipe rod are welded at the factory to the construction site, which is conducive to on-site installation. The problem of interaction between the housing and the cover is a relatively complicated problem. The different connection forms between them have a great influence on the bearing performance of the nodes. For the convenience of manufacture, the connection between the casing and the cover plate is generally welded, and the restraining effect of the cover plate on the casing is effectively utilized.
The connection has good sealing performance, anti-corrosion and anti-rust function, and avoids corrosion on the inner side of the casing. For the space grid as the roof, the upper node is covered upwards, which is more convenient for laying and finding slopes of the roofing members, and the construction is convenient.
The retractable tape measure for sewing is available at different sizes:100cm/40inch,150cm /60inch ,180cm/72inch,200cm /79inch, 214cm/84cm. As a custom product supplier, Wintape provides custom service with cooperate logo. The retractable tape measure is compact and small with key chain. It offers double measurements in centimeters and inch.
Made of fiberglass, the Square Retractable Tape Measure For Sewing With Cooperate Logo is advantageous in:
- Self-rewinding button
- Customized making
- in-1 tape
- Eco-friendly production
It has auto lock mechanism, when you measurement work finished, press the centre button, the tapeline will retract into the case neatly and smoothly.
About Material
The tape measure is made of ABS case, PVC coated fiberglass. All the materials are eco-friendly, which pass ROHS and EN-71 tests. The lead content is less than 5ppm.
About Case Color
Case colors can be customized according to pantone code. We have stock for standard color, white and black.
We can make metal silver color and transparent color too.
About Custom Logo
Custom logo is available.For 1-2colors logo, we will use silk printing
For full color logo, we will print it with heat transfer printing ,
And we also make normal sticker or epoxy plate logo sticker for single color or full color logo
For PU or real leather tape measure, we can make emboss logo
For Plush covered item,we can make embroidry logo
About Tape Colors
Standard tape colors are in white and black
We can make pink, green or other colors.
Full color design is available too.
About Tapeline Size
The standard length is 150cm/60inch and 100cm/40inches
We have longer one in length of 180cm/72inch and 200cm/79inch, and the maximum length is 214cm.
The maximun length for the square shape item is 1.5M/60inch,
Tape width is 7.5mm.
Mini Steel Measure Tape,1m Measure Tape,Steel Band Tape
Wintape Measuring Tape Company , https://www.wintapetape.com