Guangzhou Steel teach you: connection handling, processing and Steel Works conflict face pieces
1, the connector bolt hole according to relevant provisions of Chapter 8 of this specification for processing, precision bolt hole wall roughness appearance, diameter and pitch tolerance and so on, Guangzhou steel should be consistent with existing national standards "Steel Construction Quality Acceptance "of the relevant provisions of GB50205.
2, bolt hole pitch over the provisions of this Code section 7.2.1 of the allowable error, the base material can be used to match the welding electrodes, and shall be subject to the system after re-qualified NDT holes, each hole by welding Number of re-drilling must not exceed 20% of the group the number of bolts.
3, high strength bolts conflict face contact surface voids due to the thickness tolerances and other manufacturing error or installation error occurs, provisions for processing in accordance with Table 7.2.3.
4, conflict bolts connecting surface treatment process can be selected at the design according to the requirements of the anti-slip coefficient, anti-slip coefficient should fit the design requirements. When using hand-grinding wheel, grinding direction should be perpendicular to the direction of the force and scope should not be less than 4 times grinding bolt aperture.
5, the high strength bolts connecting process after the appearance of a conflict surfaces, should be consistent with the following provisions:
(1) a connection collision surface should be dry and clean, should not have flash, burrs, weld spatter, burr, iron skin, dirt and so on;
(2) Conflict surface after treatment should take protective measures, shall be marked in conflict face;
(3) Conflict surface with rust treatment, before installation should be fine wire brush perpendicular to the direction of the force member removed rust conflicts surface. Guangzhou Steel
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