Portable Container Loading Metal Prefabricated H Steel Structural
Airplane Hangar
Our Company
Qingdao KXD Steel Structure Co., Ltd, is a professional enterprise
specializing in designing, developing, manufacturing, marketing and
constructing high quality steel structures, prefabricated houses
and container houses. We have professional steel structure
engineering contracting first class qualification and ISO9001: 2000
quality system certification.
Our company was established in 1996. There are 1000 employees,
including 5 registered engineers, 36 senior engineers and 120
professional technicians. Up to now, we have successfully
undertaken and operated hundreds of international projects in more
than 76 countries and regions around the world.
Our products are exported to North America, South America, Europe,
Africa, Oceania and many Asian countries and regions. With the idea
of "Credit builds brand", we have already established good
relationships with many overseas clients.
Based on the spirit of "Credit, Professionalism, Cooperation,
Mutual benefits", our company is building a comprehensive
industrial chain system gradually and making great efforts to
supply our quality products and perfect after-sales services to
worldwide clients.
Manufacturing programm and method statement on the steel structure
The purpose of method statement is to describe the guidelines and
methodology followed by our company during the fabrication,
blasting, painting and supply of pre-engineered structure for any
of steel building project.
A:Material receiving procedure
Verify the receiving documents and quantity of the received
material by stores.
Submit the load for QC inspection by stores.
As a first inspection QC shall perform Visual inspection to confirm the surface
condition and for any damages including the condition of packing
and wrapping.
QC shall perform the dimensional inspection if the material found
accepted in visual inspection and the material will be returned to
supplier if it is rejected.
In the dimensional inspection, QC shall check the all over
dimensions such as length, width, depth, thickness etc.
Once the material is accepted in dimensional inspection, the
supporting documents like MTC will be verified by QC to ensure that
the heat number in the material is matching with the heat number in
the received material.
QC shall prepare the Incoming Material Inspection Report as per the
inspections carried out above.
B:Preparation of material
Design and Development department will make the drawings of the
structural of project. As per the drawings, production department
will prepare the items. The preparation of items is divided into
two.
PREPARATION OF PLATES
The drawings shall be transferred to the any storage device using
the expert software.
These drawings shall be copied into the plate processing machine.
According to the drawings, the preparation
of the items shall be
carried out.
The automated machine will sense the length of the plate and carry out plate
processing according to the fed NC files in expert software.
Punching of part mark on the plate will do first.
Drilling of the plates will done as per the NC files in
the machine.
Plasma cutting of the plates will be done finally.
PREPARATION OF BEAMS/TUBES etc.
The fabrication drawings shall be prepared by design department and will be fed into the automated cutting and drilling machine.
Next the automated machine will do drilling where ever required as
mentioned in the drawings.
After completing the cutting and drilling process the job shall be
transferred from drilling machine to fit-up section.
C:Fit-up
The fabrication drawings shall be issued by the production engineer
to the production supervisor for execution priority wise
These drawings shall be given to the fabricators for fit-up
of job.
The prepared beams and other connection detail items shall be
collected by the fabricators for fit-up of the job.
The other items such as end plates, gusset plates, stiffeners, purlin cleats, stay
angle cleats etc. shall be fixed in the appropriate places which are mentioned
in the fabrication drawing by tack welding.
Once the fit-up of the job shall complete, the production dept.
will offer to QC dept. for inspection.
D:Welding and grinding
PROCEDURE-SUBMERGED ARC WELDING
The production supervisor shall plan the jobs to be welded.
Only the items that are fitted and accepted by QC shall be taken
for welding.
Clean the location where the welding has to be done free of dust,
oil, grease etc.
Set the wire feed and voltage for welding.
The fillet size shall not exceed more than the smaller thickness of
the part unless otherwise specified in the drawing.
The fillet size parameters will be maintained according to the
chart displayed in the welding area which is prepared based
on GB50661-2011 standard
After welding, remove the spatters and slag completely.
Grind off the burrs, sharp edges and excessive reinforcements.
Offer to QC for inspection.
PROCEDURE-MIG WELDING
The production supervisor shall plan the jobs to be welded.
Only the items that are fitted and accepted by QC shall be taken
for welding.
Clean the location where the welding has to be done free of dust,
oil, grease etc.
Set the wire feed and voltage for welding.
The fillet size shall not exceed more than the smaller thickness of
the part unless otherwise specified in the drawing.
The fillet size parameters will be maintained according to the
chart displayed in the welding area which is prepared based on GB50661-2011 standard
After welding, remove the spatters and slag completely.
Grind off the burrs, sharp edges and excessive reinforcements.
Offer to QC for inspection.
E:Blasting
HANDLING & PREPARATION OF MATERIAL PRIOR TO BLASTING
Prior to any work commencing, Tool Box Talk shall be performed by
Foreman for every task involved in the automated blasting and
manual blasting phase. The working area shall be barricaded with
information notices posted to alert passersby of the operation
within.
The ID of fabricated steel to be blasted shall be recorded by
Foreman on a shift to shift basis for the purposes of traceability.
Raw material steel sections to be blasted shall be craned onto the "in-feed" rack. The "in-feed" rack shall be custom built and level with the rollers of the conveyor. All rigging shall be planned before the list of items. All personnel involved shall be
suitable trained and qualified for the job they are doing.
Once the raw material is sat on the "in-feed" rack, it may be cleaned with high pressure air to remove dust in the surface of the item.
LOADING THE IN-FEED CONVEYOR
Once cleaned, the material is fed into the chamber of the automated
machine through the conveyor. The chamber consists of both in & outlet vestibules, on which hung rubber curtains, which serve to prevent the escape of abrasives during the
blasting process.
AUTOMATED BLASTING OF RAW MATERIAL
The operator of the machine will be trained in its use. During the
commissioning phase, the vendor will train the selected personnel
in the safe use and maintenance of the machine. These individuals
alone will be allowed to run the machine's control panel.
In the central blast chamber proper, six internally mounted wheels
rotate at high speed, throwing the steel shot working mixture at high velocity directly onto the steel substrate,
which is the actual blasting activity. As the structural beams move
slowly through the chamber, it emerges through the exit vestibule
fully cleaned (Grade - SA 2/2.5). Operatives shall not handle or touch the beams during the
blasting process. Once fully exited, it is again manually rolled
back off the conveyor onto an "out-feed rack" ready for priming.
All personnel working with the automated blasting machine shall
wear full PPE in addition to ear protection when in the immediate
vicinity of the machine. Signage shall be posted at the machine
reminding personnel to comply with these requirements.
F:Painting of fabricated material
Application of paint shall normally be done once per day in the
afternoon, once the day's scheduled blasting work is complete.
Prior to the application of the primer, the QC shall inspect the
blasted surfaces to check the required standards in the approved
ITP have been
met. Any area(s) deemed to have fallen short of the required standard will require re-blasting
either by being driven through the blast chamber again, or by
Injection blast gun if possible, whilst still on the out-feed rack.
Any 'sweep' blast done by mini pot will utilize copper slag as
the abrasive.
Once the blasted surface has been accepted by QC, application of the primer can commence,
provided ambient conditions checks prove satisfactory. These must be checked and recorded
before any and every application. In order for coatings to proceed, the surface must be at least
3˚C above the dew point temperature, and the relative humidity must
be 85% or below. Surface must be dry and free from oil, grease and
soluble salts, protrusions, sharp edges, or visible laminations,
and not exceed 40˚C in temperature.
Application
Before application QC should do the inspection of the atmospheric
conditions according to GB50205-2001
Standard Grade: Air Temperature 5-40 ºC
Substrate Temperature 23-40 ºC
Relative Humidity 50-85 %
Paint shall be applied wherever possible by means of Airless spray.
The paint material will be checked for conformity with shelf life
restrictions, temperature and batch number. Mixing ratio, tip size
and method of agitation shall be checked by QC to ensure adherence
with the
approved ITP and Paint Manufacturer's recommendations. Pot life will also be monitored once
mixed. Only experienced spray applicators shall be used for the application of paint materials,
and all shall wear appropriate PPE for the job.
During the application, the spray applicator shall take WFT (Wet
Film Thickness) readings in accordance with the approved ITP to
ensure his target WFT is being achieved. Spot checks by QC will be
made to verify conformitySpecification of Painting System:
Primer coat: Per the project requirement, Second coat: Per the
project requirement, Third coat: Per the project requirement
Touchup at site - after erection
G:Loading and shipping
Receives the finished components from the production (Painting
dept.) and store them properly job wise in the yard.
Arrange trucks from contract signed truck companies, immediately after getting the clearance of job for loading.
Loading can start once all the details are confirmed.
Copies of all the documents shall be kept in the Job file.
Product Presentation
Steel structure industrial buildings cover various types such as
factories and aircraft hangars. These buildings use steel as the
core load-bearing components. The steel components are precisely
prefabricated in factories and then assembled and erected on-site.
In terms of appearance, they mostly present simple and regular
geometric shapes. The walls often use lightweight partition
materials like color steel plates, with rich colors and flexible
color choices. The interior space is spacious, with few or no
columns, suitable for large space requirements such as industrial
production and aircraft parking.
Product Superiority
I. Spatial and Structural Advantages
Large space flexibility: The interior is spacious without excessive
load-bearing obstructions. Industrial plants can flexibly arrange
production lines, and hangars can accommodate different aircraft
models for parking and maintenance, meeting diverse usage demands.
Structural lightweighting: Compared to traditional buildings, the
self-weight is significantly reduced, reducing foundation pressure,
saving construction costs, and facilitating construction on
different geological conditions.
II. Construction and Cycle Advantages
Industrialized prefabrication: Steel components are produced in
factories in a standardized manner, with high precision and
controllable quality, reducing on-site construction errors and
risks.
Assembly-based construction: The construction is mainly carried out
through assembly operations, with fast construction speed,
significantly shortening the construction period, and facilitating
the rapid commissioning and operation of the project.
III. Environmental and Economic Advantages
Green environmental friendliness: Steel can be recycled and reused,
reducing construction waste during demolition; there is less wet
work during construction, reducing dust and noise pollution, which
is in line with the green building concept.
Full-cycle economy: The early construction is fast, saving time
costs, and the later maintenance is simple. Steel components are
durable, and the enclosure materials can be easily replaced,
resulting in lower long-term operating costs.
IV. Adaptation and Expansion Advantages
Wide scene adaptability: From ordinary industrial production to
high-demand fields such as aviation, with high strength and large
space, it can meet the special needs of various industries for
buildings.
Easy expansion and renovation: If the usage requirements change,
the steel structure building can be conveniently renovated,
expanded, or added floors. The steel components can be
disassembled, reassembled, and adapted to the development and
upgrading of the enterprise.
FAQ
Q: You are manufacture factory or trading company?
A: We are manufacture factory. And you are welcomed to visit us at
any time.
Q: Can you provide the installation help?
A: We will provide detailed instruction photos and videos to you.
If it is necessary, we will send professional engineers to do the
construction guidance, and some skilled workers to help
installation.
Q:What are the shipping ports?
A:You can choose other ports according to your needs.
Q:Does the product have quality inspection before loading?
A: Of course, all our products have undergone strict quality
inspection before packing, and unqualifiedproducts will be
destroyed.
Please contact me if your have any questions.
