Related Materials - Welded Tube - NINGBO DONGDING SPECIAL TUBE CO.,LTD.

Welded Tube

Made of premium steel with precision welding, our welded tubes feature complete specifications, high pressure resistance, corrosion resistance and reliable welds. Widely used in water supply and drainage, gas and industrial transmission, they deliver reliable quality for all engineering applications.

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Related Materials

Customization for special specifications, sizes and lengths is available upon negotiation.

GB, ASTM A, ASME SA and PED specifications	Material		Outer Diameter	Wall Thickness
GB, ASTM A, ASME SA and PED specifications	ASME	W-Nr	Outer Diameter	Wall Thickness
Austenitic Stainless Steel Tube	304/304L	1.4301/1.4306	3-65	0.3-5.0
	316/316L/316LSS	1.4401/1.4404	3-65	0.3-5.0
	321/321H	1.4541/1.4940	3-65	0.3-5.0
	S31254	1.4547	3-65	0.3-5.0
Duplex Steel Tube	2205	1.4462	3-65	0.3-5.0
	2507	1.441	3-65	0.3-5.0
	S31803	/	3-65	0.3-5.0
Nickel-Based Alloy Tube	UNS NO6600	2.4816	3-65	0.3-5.0
	UNS NO6625	2.4856	3-65	0.3-5.0
	UNS NO8810	1.4958	3-65	0.3-5.0
	UNS NO8825	2.4858	3-65	0.3-5.0
	N10276(C-276)	2.4819	3-65	0.3-5.0
	NO4400	2.4360/2.4361	3-65	0.3-5.0
Titanium Alloy	SB338- Gr 1	3.7025	3-38	0.3-3.0
Titanium Alloy	SB338- Gr 2	3.7035	3-38	0.3-3.0

Industrial Applications

Tubes for High-efficiency Energy-saving Heat Exchangers

As a core component of various heat exchangers, it improves heat transfer efficiency and extends service life by optimizing tube material, structural design and surface treatment processes.

Heat Exchanger Tube

High-Efficiency Heat Exchanger Tube

Extra-Long Coiled Tube
Instrument Tracing Tubes

Our Instrument Tracing Tubes feature high temperature resistance, excellent corrosion resistance and great tightness. Specially designed for heat tracing and insulation of instrument pipelines, they are suitable for industrial scenarios such as chemical engineering and electric power, accurately ensuring the stable operation of instruments.

Special-shaped Tube

Pre-insulated Tube

Precision Heat Tracing Tube
Marine Engineering Tubes

The Dongding marine engineering tubes are made of special corrosion-resistant materials, offering high pressure tolerance, impact resistance, and seawater erosion resistance. Designed to adapt to demanding marine environments such as offshore platforms and oil and gas transportation, they can ensure stable and durable performance.

Undersea Umbilical Cable Tubes

Extra-long Coiled Tube

Product Standards