Purging in Ss Pipe Welding
Purging in Ss Pipe Welding
Purging in Ss Pipe Welding
Purging in Ss Pipe Welding
Purging in Ss Pipe Welding

Purging in Ss Pipe Welding

Purging is a critical process for SS pipe welding to ensure the production of high-quality welds that are free from defects such as oxidation, porosity, and contamination. It involves cleaning the inside of pipes to eliminate any oxygen or other gases that may react with the welding process and cause defects in the resulting welds.

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Product Introduction

To start the purging process, the first step is to clean the pipe's inner surface thoroughly using a suitable cleaning agent to remove any debris or contaminants. After cleaning, the pipe needs to be preheated to a temperature of about 150°C to minimize the risk of cracking or distortion during the welding process.

Once the cleaning and preheating are complete, the next step is to introduce a purging gas, usually argon or helium, into the pipe through one end while at the same time venting any remaining oxygen or air out through the other. The purging gas displaces the oxygen and other gases, creating a clean and oxygen-free welding environment.

The process of purging continues throughout the welding operation until the weld is complete, after which the purging gas continues to flow into the pipe until the weld cools down to room temperature. This final step helps to prevent oxidation and contamination of the weld.

When performed correctly, purging helps to ensure that SS pipe welds are of high quality, with no defects, and have excellent mechanical properties, corrosion resistance, and aesthetic appearance. Proper purging is critical to the overall success of the welding process, and it is essential to work with qualified and experienced professionals to ensure that the procedures are performed safely and effectively.

purging in ss pipe welding

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Stainless Steel Pope/Tube
Steel Grade	200 seeies, 300 series, 400 series
Standard	ASTM A213,A312,ASTM A269,ASTM A778,ASTM A789,DIN 17456.DIN17457,DIN 17459,JIS G3459,JIS G3463,GOST9941,EN10216, BS3605GB13296
Material	304 304L 309S,310,316,31671,317,317L 321,347,347H,304N,316L 316N,201.202
Surface	Polishing,annealing,pickling,bright
Type	hot rolled and cold rolled
Stainless steel round pipe/tube
Size	Wall thickness	1mm-150mm(SCH10-XXS）
	Outer diameter	6mm-2500mm (3/8"100"）
Stainless steel square pipe/tube
Size	Outer diameter	4mm*4mm800mm 800mm
	Wall thickness	1mm-150mm(SCH10-XXS
Stainless steel rectangular pipe/tube
Size	Wall thickness	1mm-150mm(SCH10-XXS
	Outer diameter	6mm-2500mm (3/8"100")
	Length	4000mm,5800mm,6000mm,12000mmor as required
Trade terms	Price terms	FOB,CIFCFR,CNF,Ex-work
	Payment terms	T/TL/c,westen union
Delivery time	Prompt delivery or as the order quantity.

Main target markets and countries

1. Oil and gas industry: SS pipeline welding technology is widely used in the oil and gas industry, mainly used in pipelines transporting high pressure oil and gas. The target countries are mainly the United States, Russia, Kuwait and other Middle Eastern countries.

2. Energy industry: SS pipeline welding technology is used in the energy industry to transport hydropower, oil, natural gas and other energy pipelines. The target countries are mainly developing countries such as China, India and Brazil.

3. Chemical industry: SS pipeline welding technology is widely used in the chemical industry, mainly for transporting various chemical liquids or gases. The target countries are mainly the United States, Germany, Japan and other countries.

4. Food industry: SS pipeline welding technology is mainly used in the food industry to transport liquid food, such as milk, juice, etc. The target countries are mainly developed countries such as Europe and the United States and Australia.

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