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Cooperative Company : CLP
Project Type : Pipeline Repair
Material: ASTM A 106B carbon steel pipe
Welding material: E-7018 welding support
Welding method: manual arc welding
Customer acceptance requirements:
a) Polish the surface after repair.
b) Conduct magnetic particle inspection to check whether the weld has cracks, pores, slag inclusions, and other defects,
the quality of appearance inspection of pipeline welds shall comply with the relevant provisions of the standard.
c) Ultrasonic inspection to check whether the weld has cracks, pores, slag inclusions, and other defects,the quality of appearance inspection of pipeline welds shall comply with the relevant provisions of the standard.
d) Pipeline pressure test, according to design regulations, conduct system strength test on pipeline and air tightness test, the purpose is to check the pressure of the pipeline
Concerning the tightness of each connection part, the liquid pipeline is tested by hydraulic pressure.
Welding
Engineering Case
Cooperative Company : WSD
Project Type : Piping Solder Connection Project
Material: 316L seamless pipe
Size: 51 mm diameter to 405 mm in diameter
Welding material: 316L argon wire
Welding method: Argon arc welding + argon gas in the pipeline
Customer acceptance requirements:
a) Perform 100% visual inspection to check whether the welds have defects such as cracks, pores, slag inclusions, etc. The quality of the visual inspection of pipeline welds should meet the relevant regulations of the standard.
b) Perform 100% liquid penetration inspection to check whether the welds have cracks, pores, slag inclusions, and other defects. The appearance inspection quality of pipeline welds should meet the relevant regulations of the standard.
c) Perform 100% radio-graphic inspection to check whether there are cracks, pores, slag inclusions, and other defects in the welds of the negatives. The inspection quality of the welds of the pipelines should meet the relevant regulations of the standard.
d) Pipeline pressure test. According to the design regulations, conduct system strength test and air-tightness test on the pipeline. The purpose is to check the pressure of the pipeline and the tightness of each joint. The gas conveying pipeline is tested with gas.
Cooperative Company:
O ·PARK1(Siu Ho Wan)
Project Type: Cooling Unit
Material: 316L seamless pipe
Size: 102 mm diameter × 6 mm thickness
Welding material: 316L argon wire
Welding method: Argon arc welding + argon gas
in the pipeline
Customer acceptance requirements:
a) Perform 100% visual inspection to check whether the weld has cracks, pores, slag inclusions, and other defects. The quality of the visual inspection of pipeline welds should meet the standard the relevant provisions.
b) Perform 100% liquid penetration inspection to check whether the welds have cracks, pores, slag inclusions, and other defects. The appearance inspection quality of pipeline welds should meet the relevant regulations of the standard.
c) Perform 100% radio-graphic inspection to check whether there are cracks, pores, slag inclusions, and other defects in the weld of the negative.
The relevant provisions.
d) Pipeline pressure test. The system strength test and air tightness test are performed on the pipeline. The purpose is to check the pressure of the pipeline and the tightness of each connection part. The gas conveying pipeline is tested with gas.
Cooperative Company :
EMSD（Cape Collinson Crematorium）
Project Type: High-pressure pipe welding
Material: ASTM A 106B carbon steel seamless pipe
Size: 25.4 mm diameter × 3 mm thickness
Welding material: 70S argon wire
Welding method: Argon arc welding + mirror reflection welding the back
Customer acceptance requirements:
a) Perform 100% visual inspection to check whether the weld has cracks, pores, slag inclusions, etc.
For defects, the quality of appearance inspection of pipeline welds shall comply with the relevant provisions of the standard.
b) Perform 100% liquid penetration inspection to check whether the welds have cracks, pores, slag inclusions, and other defects. The appearance inspection quality of pipeline welds should meet the relevant regulations of the standard.
c) Perform 100% radio-graphic inspection to check whether there are cracks, pores, slag inclusions, and other defects in the welds of the negatives. The inspection quality of the welds of the pipelines should meet the relevant regulations of the standard.
d) Pipeline pressure test, according to the design regulations, conduct system strength test.
The purpose of the air-tightness test is to check the pressure of the pipeline and the tightness of each connection part. The pipeline that transports the liquid adopts a hydraulic test.
(1-inch diameter)
Cooperative Company : Freezer Warehouse
Project Type : 12-inch diameter installation welding
Material: 316L seamless pipe
Size: 405 mm diameter × 10 mm thickness
Welding material: 316L argon wire
Welding method: Argon arc welding + argon gas in the pipeline
Customer acceptance requirements:
a) Perform 100% visual inspection to check whether the welds have defects such as cracks, pores, slag inclusions, etc. The quality of the visual inspection of pipeline welds should meet the relevant regulations of the standard.
b) Perform 100% liquid penetration inspection to check whether the weld has cracks, pores, slag inclusions, etc.
For defects, the quality of appearance inspection of pipeline welds shall comply with the relevant provisions of the standard.
c) Perform 100% radiographic inspection to check whether there are cracks, pores, slag inclusions, and other defects in the welds of the negatives. The inspection quality of the welds of the pipelines should meet the relevant regulations of the standard.
d) Pipeline pressure test. According to the design regulations, conduct system strength test and air-tightness test on the pipeline. The purpose is to check the pressure of the pipeline and the tightness of each joint. The gas conveying pipeline is tested with gas.
(20-inch diameter furnace pipe)
Material: P 22 carbon steel seamless pipe
Size: 510 mm diameter × 30 mm thickness
Welding material: 80S argon wire + E-8018 manual welding
Welding method: argon arc welding base + manual arc welding fill
Customer acceptance requirements
a) Perform 100% visual inspection to check whether the welds have defects such as cracks, pores, slag inclusions, etc. The quality of the visual inspection of pipeline welds should meet the relevant regulations of the standard.
b) Perform 100% liquid penetration inspection to check whether the welds have cracks, pores, slag inclusions, and other defects. The appearance inspection quality of pipeline welds should meet the relevant regulations of the standard.
c) Perform 100% radio-graphic inspection to check whether there are cracks, pores, slag inclusions, and other defects in the welds of the negatives. The inspection quality of the welds of the pipelines should meet the relevant regulations of the standard.
d) Pipeline pressure test. According to the design regulations, conduct system strength test and air-tightness test on the pipeline. Its purpose is to check the pressure of the pipeline and the tightness of each connection part. The pipeline that transports liquid is tested by hydraulic pressure.
Cooperative Company : CLP
Project Type :
High pressure pipe welding
Cooperative Company : EMSD (Wo Hop Shek Crematorium)
Project Type : High pressure pipe welding
Material: ASTM A 106B carbon steel seamless pipe
Size: 51mm diameter × 5 mm thickness
Welding material: 70S argon wire
Welding method: Argon arc welding + mirror reflection welding the back
Customer acceptance requirements
a) Perform 100% visual inspection to check whether the welds have defects such as cracks, pores, slag inclusions, etc. The quality of the visual inspection of pipeline welds should meet the relevant regulations of the standard.
b) Perform 100% liquid penetration inspection to check whether the welds have cracks, pores, slag inclusions, and other defects. The appearance inspection quality of pipeline welds should meet the relevant regulations of the standard.
c) Perform 100% radiographic inspection to check whether there are cracks, pores, slag inclusions, and other defects in the welds of the negatives. The inspection quality of the welds of the pipelines should meet the relevant regulations of the standard.
d) Pipeline pressure test. According to the design regulations, conduct system strength test and airtightness test on the pipeline. The purpose is to check the pressure of the pipeline and the tightness of each connection part. The pipeline that transports liquid is tested by hydraulic pressure.
(2-inch diameter)
Cooperative Company : CLP
Project Type : High pressure pipe welding
Material: P 22 carbon steel seamless pipe
Size: 63mm diameter × 12mm thickness
Welding material: 90S argon wire
Welding method: argon arc welding
Customer acceptance requirements:
a) Perform 100% visual inspection to check whether the welds have defects such as cracks, pores, slag inclusions, etc. The quality of the visual inspection of pipeline welds should meet the relevant regulations of the standard.
b) Perform 100% liquid penetration inspection to check whether the welds have cracks, pores, slag inclusions and other defects. The appearance inspection quality of pipeline welds should meet the relevant regulations of the standard.
c) Perform 100% radio-graphic inspection to check whether there are cracks, pores, slag inclusions and other defects in the welds of the negatives. The inspection quality of the welds of the pipelines should meet the relevant regulations of the standard.
d) Pipeline pressure test. According to the design regulations, conduct system strength test and air tightness test on the pipeline. Its purpose is to check the pressure of the pipeline and the tightness of each connection part. The pipeline that transports liquid is tested by hydraulic pressure.
(2 inch and a half furnace pipe)
Material: 316L high-pressure boiler steel pipe
Size: 405 mm diameter × 15 mm thickness
Welding material: 316L argon wire
Welding method: Argon arc welding + argon gas in the pipeline
Customer acceptance requirements:
a) Perform 100% visual inspection to check whether the welds have defects such as cracks, pores, slag inclusions, etc. The quality of the visual inspection of pipeline welds should meet the relevant regulations of the standard.
b) Perform 100% liquid penetration inspection to check whether the welds have cracks, pores, slag inclusions, and other defects. The appearance inspection quality of pipeline welds should meet the relevant regulations of the standard.
c) Perform 100% radiographic inspection to check whether there are cracks, pores, slag inclusions, and other defects in the welds of the negatives. The inspection quality of the welds of the pipelines should meet the relevant regulations of the standard.
d) Pipeline pressure test. According to the design regulations, conduct system strength test and airtightness test on the pipeline. The purpose is to check the pressure of the pipeline and the tightness of each joint. The gas conveying pipeline is tested with gas.
