Name: Carbon Steel Copper Coated Bundy Tube Double Walled Steel Bundyweld Tube
Brand: Yuhong Group Co.,Ltd
SKU: EN10305, ASTM A254, DIN 74234
Price: 1000000.00 USD
Availability: InStock

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Carbon Steel Copper Coated Bundy Tube Double Walled Steel Bundyweld Tube

Productdetails:

Plaats van herkomst:	CHINA
Merknaam:	YUHONG
Certificering:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Modelnummer:	EN10305, ASTM A254, DIN 74234

Betalen & Verzenden Algemene voorwaarden:

Min. bestelaantal:	100 kg
Verpakking Details:	Multiplex kast, bundel, pallet
Levertijd:	7 dagen
Betalingscondities:	L/c, t/t

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Gedetailleerde productomschrijving

Standaard:	EN10305, ASTM A254, DIN 74234, SAE J527	Materiaal:	10#, Q215, ST35, 10#-45#, Q195-Q345, ST35-ST52
OD:	4,76 - 16 mm	WT:	0,71 - 1,22 mm
Type:	Dubbele en eenmuur gelaste buis	test:	ET, HT, die Test, Uitbreidingstest, Kwiknitraattest afvlakt; De Test van de ammoniakdamp; Chemische
Markeren:	carbon steel bundy tube , copper coated bundyweld tube , double walled steel tube

Carbon Steel Copper Coated Bundy Tube Double Walled Steel Bundyweld Tube

Bundy tube is type of double-walled low-carbon steel tube manufactured by rolling a copper-coated steel strip through 720°F and resistance brazing the overlapped seam in a process called Bundywelding. It may be zinc coated for corrosion protection. It is primarily used in automotive hydraulic brake lines in cars. We can supply any type and diameter of Bundy Tube your requirement calls for.

Bundy Tube

Double-Walled Construction: It is made from two layers of low-carbon steel strip.
Copper Brazing: The unique process involves coating one strip of steel with a layer of copper. The two strips are then rolled into a tube and passed through a furnace. The heat melts the copper, which bonds the two layers together seamlessly along the entire length of the tube. This creates an extremely strong, leak-proof, and consistent tube.
Strength and Durability: The double-wall design makes it much stronger than a single-wall tube of the same thickness, allowing it to withstand high pressures and resist vibration and fatigue.
Smooth Interior: The manufacturing process results in a very smooth inner surface, which is ideal for fluid flow.

Standard	Region / Organization	Description
SAE J527	SAE (Society of Automotive Engineers, USA)	Covers double-walled, copper-coated, steel, resistance-brazed tubing for automotive and hydraulic use.
SAE J356	SAE	Covers single-wall welded low-carbon steel tubing, sometimes used as alternative to Bundy.
ASTM A254	ASTM (USA)	Covers copper-brazed steel tubing (also known as Bundy tubing).
DIN 74234	DIN (Germany)	Specification for double-walled brazed steel tubing (Bundy tube) for brake lines.
EN 10305-2	European Norm	Welded cold-drawn steel tubes for precision applications (sometimes used for Bundy-type tubes).

Size and Tolerance

Outer diameter (mm)	Diameter tolerance (mm)	Wall thickness(mm)	Wall thickness tolerance(mm)	Pressure resistance(MPa)	Burst pressure (MPa)
4.76	±0.05	0.7	+0.05/-0.08	41.2	110
6	±0.08		±0.08	32.7	85
6.35	±0.08		±0.08	30.9	78
8	±0.1		±0.08	24.5	67.5
9.52	±0.1		±0.08	20.6	57
10	±0.1		±0.08	19.6	55
12	±0.1		±0.08	16.3	32
10	±0.1	1	±0.08	28	65
12	±0.1	1	±0.08	23.3	56

Common Applications

Bundy tube is famous for its use in automotive and refrigeration systems where reliability is critical:

Automotive: Brake lines and fuel lines are the most common applications. Its strength and resistance to corrosion (especially when coated or plated) make it ideal for these safety-critical systems.

Refrigeration & AC: Used for refrigerant lines in domestic refrigerators, air conditioners, and heat pumps because it is strong and can be easily bent to fit tight spaces.

Hydraulic Lines: Used in various hydraulic systems for machinery.

General Industrial Applications: Anywhere a durable, small-diameter, pressure-resistant tube is needed.

Carbon Steel Copper Coated Bundy Tube Double Walled Steel Bundyweld Tube 0