welding
(1), the general requirements
a welder required certificates.
c welding, flux before use technical specifications shall be specified baking temperature baking.
c welding welder should be reviewed before the handling member joint quality and pads, if not meet the requirements, in order to be qualified welding after trimming.
(2) the welding process
a Before welding, construction workers assessed according to the process of compilation of the welding process instructions, specific guidance welder welding work.
b raining or snowing non-open-air welding.
c positioning welders should have Welder certification, welding materials used should tack welding and welding materials the same official, tack welding may not have pores, cracks, slag and other defects.
d same position should not exceed twice the number of weld repair.
(3), H-beam welding
All members of the project H-beam welding using LMZ-1500 automatic gantry welding machine, automatic submerged arc welding, gas shielded welding machine welding, to avoid weld, slag, weld defects.
test
(1) After completion of the processing member, in accordance with the processing map and (GB50205-2001) of the relevant provisions into acceptance.
(2), member acceptance criteria for the acceptance of construction quality of steel structures (GB50205-2001) and construction drawings.
Painting, NO
(1), the general requirements
a member rust and paint work should be carried out after the quality inspection qualified member.
b Painting Lobe coating construction personnel professional training, after familiar with the performance of coatings and coating job essentials, before construction.
(2), the management coatings
A variety of coating materials of different specifications should meet the design requirements.
b component coating technology used must comply with the conditions of professional standards, and product certification. Over use of custody of the paint should be re-inspection, qualified before use.
Factory
Lifting member according to plan will be qualified batches packaged, transported to the site.
Admission preparation
(1), construction workers and related personnel arrived at the construction site preparation work before installation.
(2), the former construction workers were entering education, quality, duration, safety and other aspects of the work to fully implement the team, for all the difficulties of design drawings, construction program, focusing on a comprehensive understanding.
(3), with the Party-site tests, such as raw materials, components, and equipment disposal site access road, water, electricity, housing, construction coordination and determine the amount of each process and construction plans, and other construction units Cross Operations Coordination plan.
(4) of the construction process (base buried and associated facilities) for review, to ensure the quality of embedded parts, elevation, the central axis, geometry, parallel degree correct. Do the handover procedures.
(5), according to the requirements of the steel works, ready to upgrade machinery, equipment, tools, materials planning and special tools; equipment to do the preparatory work and auxiliary materials, such as cranes, welding machines, measuring instruments, hand tools and other aids , implement vertical transport conditions.
(6), inspection and acceptance steel components positioning axis, elevation, and make the steel member installation guides actinomycetes work;
(7), is responsible for the installation of steel components transport lifting, positioning, calibration, fastening bolt, seam welding installation work;
(8), according to the actual situation of the construction work planned to make necessary adjustments and additions and submitted to the project manager for approval.
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