High-Pressure U-Tubes | Precision Engineered for Heat Exchangers, 10-Year Warranty

ASTM/ASME Certified | Proven in 100+ Global Projects | 5-Day Rapid Prototyping

U bend Tube

20 Years of Expertise in Heat Exchanger Components, Trusted by Shell, GE, and More

Triple Quality Assurance (Material + Process + Pressure Testing)

Global Logistics + Localized After-Sales Support

Carbon Steel
Stainless
Copper and Copper Alloy
Titanium and Titanium Alloy

Request For Our Latest Price

Carbon Steel Grade
Copper and Copper Alloy
Titanium and Titanium Alloy
Stainless Steel and Nickel Alloy

Product Name	Carbon Steel Tube
Material Grade	ASTM SA179/178/SA192
	EN10216-1 P195TR1/TR2, P235TR1/TR2, P265TR1/TR2
	EN10216-2 195GH,P235GH,P265GH,TC1,TC2
	DIN17175 ST35.8, ST45.8
	JIS G3454 STPG370, STPG410
	JIS G3461 STB340, STB410, STB440
OD Ranges	15mm-219mm
WT Ranges	1mm-15mm
Length (negotiable)	up to 25000
Tube Type	Cold Drawn or Cold Rolled
Tube End	Square
End protector	Plastic tube cap;
End protector
Packing	Seaworthy packing(bundled according to the different size),
Packing	special with plastic bags or plywood box.
Out Surface Treatment	Bared, Black Painted, Varnish, Oil-dip, Passivation, Phosphating, Shot blasting
Tube Test	With Hydro Testing, ECT,UT
Application	Low-Pressure Liquid, Water, Gas, Oil, Heat-Transfer Equipment.
Application	such as tubular heat exchanger, condenser and superheater, For high, middle,low-pressure boiler and pressure purpose

Standard	BS 2871 PART3	ASTM B 111	DIN 1785	NFA 51 102	JIS H3300	IS 1545
Symbol	CZ 110	C 68700	CuZn20AI2	CuZn22AI2	C 6870	CuZn21AI2As
Cu	76.0-78.0	76.0-79.0	76.0-79.0	76.0-79.0	76.0-79.0	76.0-78.0
Al	1.8-2.3	1.8-2.5	1.8-2.3	1.8-2.5	1.8-2.5	1.8-2.3
Pb	0.07	0.07	0.07	0.07	0.07	0.07
Ni	–	–	0.1	–	–	–
Fe	0.06	0.06	0.07	0.06	0.06	0.06
Zn	REM’DER	REM’DER	REM’DER	REM’DER	REM’DER	REM’DER
As	0.02-0.06	0.02-0.06	0.02-0.35	0.02-0.06	0.02-0.06	0.02-0.06
P	–	–	0.01	–	–	–
Total Impurities Max.					–
	0.03	–	0.1	0.3	–	0.3
Condition	M	61	F39	–	O	O
	TA	–	F34	–	–	TA
	O	–	–	–	–	D
Yield Strength n/mm2	–	125	1 50-230	–	–	400Mpa Max.
	–	105	120-180	–	–	355Mpa Min.
	–	–	–	–	–	415Map
Tensile n/mm2 Minimum	–	345	390	–	373	–
	–	–	340	–	–	–
Elng’Tion Percent (%)	–	–	45Min.	–	40Min.	85Max.
	–	–	55Min.	–	–	80-110
	–	–	–	–	–	130Min.
Hardness HV5 –	150Min	–	–	80-130	–	–
	85-110	–	–	–	–	–
	75Max.	–	–	–	–	–
Grain Size mm (75X)	0.05Max.	0.010-0.045	–	0.010-0.045	0.010-0.045	0.010-0.045

Standard	ASTM B338/ASME SB338, ASTM B337/ASME SB337, ASTM B861/ASME SB861, ASTM B862/ASME SB862,AMS4911,AMS4928
Material	Gr1, Gr2
Length	≤20000mm
Size(mm)	OD: 10 – 76.2 mm, Wt: 0.3~ 6mm
Shape	Round/ Square/ U-bend
Surface Finished	Annealed/ Mechanical Polish or as required
Certificate	ISO9001/ EN 1024 3.1/ 3.1B/ 3.2, PED, DNV, TUV
Inspection Testing	100% Ultrasonic Test, 100%Eddy Current Test, 100%Hydraulic Test
	100% X-Ray Test to welded pipe or as required
	Mechanical Test, Bend Test, Inter-granular corrosion Test
Packing	Wooden case/ Steel framed plywood case/ simple packing
Feature	1. Low Density and High Strength
	2. Excellent Corrosion Resistance
	3. Good resistance to effect of heat
	4. Excellent Bearing to cryogenic property
	5. Nonmagnetic and Non-toxic
	6. Good thermal properties
	7. Low Modulus of Elasticity

Chemical Composition
Grade	N	C	H	Fe	O	Al	V	Pa	Mo	Ni	Ti
Gr1	≤0.03	≤0.08	≤0.015	≤0.2	≤0.18	/	/	/	/	/	bal
Gr2	≤0.03	≤0.08	≤0.015	≤0.3	≤0.25	/	/	/	/	/	bal

Material Grade	Nickel Alloy	ASTM B474	UNS N02200/Ni 200, UNS N02201 /Ni201,
			UNS N04400/ Monel 400, UNS N06002 /Hastelloy X,
			UNS N06022/ Hastelloy C22,
			UNS N08825/ Incoloy 825, UNS N10276/ Hastelloy C276,
			UNS N10665 /Hastelloy B2, UNS N10675/Hastelloy B3,
			UNS N06600/Inconel 600, UNS N06601/ Inconel 601,
			UNS N06625 /Inconel 625, UNS N08020 /Alloy 20
		ASTM B161	UNS N02200/Ni 200, UNS N02201 /Ni201
		ASTM B163	UNS N02200/Ni 200, UNS N02201 /Ni201,
			UNS N06601/ Inconel 601 UNS N04400/ Monel 400, UNS N06600/Inconel 600,
		ASTM B165	UNS N04400/ Monel 400
		ASTM B407	UNS N08800 /Incoloy 800, UNS N08810 /Incoloy 800H, UNS N08811 /Incoloy 800HT
		ASTM B729	UNS N08020 /Alloy 20
		ASTM B444	UNS N06625 /Inconel 625 ,
		ASTM B423	UNS N08825/ Incoloy 825
		ASTM B464	UNS N08020 /Alloy 20
		ASTM B622	UNS N10665/Hastelloy B2, UNS N10675/Hastelloy B3,
			UNS N06200/C2000, UNS N10276 /C276,
			UNS N06002/ Hastelloy-X, UNS N08031/Alloy 31
	Duplex Steel	ASTM A789	S31803,S32205,S32750, S32760
		ASTM A790	S31803,S32205,S32750, S32760
	Stainless Steel	ASTM A312	TP304,TP304L,TP316,TP316L,316Ti, TP317, TP317L,
			TP321, TP310S, TP347,S31254,N08367,N08926,N08904
		ASTM A213	TP304,TP304L,TP316,TP316L,316Ti TP317,TP317L,TP321,TP310S,TP347,S31254,
			N08367, N08926,N08904
		ASTM A269	TP304,TP304L,TP316,TP316L,TP317,TP317L,TP321,TP347, S31254,N08367,N08926

Technical Specifications

Standard Technical Range

Outer Diameter (OD): 9.5mm – 38.1mm
Wall Thickness (WT): Up to 6.35mm
Bending Radii: 1.25 x OD up to 1700mm
Standards: Bends can be supplied in accordance with TEMA R / ASTM SA/A556
Leg Length: Up to 15,000mm
Heat Treatment: Provided where required by electric furnace or direct resistance methods
Hydrotesting: Pressure testing up to 10,000 psi

Additional Testing Options

Dye Penetrant Inspection: Examination of the ‘U’ bend area for surface flaws
Positive Material Identification (PMI): Ensuring material compliance with specified requirements
Heat Treatment Validation: Confirmation of proper heat treatment as per standards

Our U bending facilities have the flexibility to meet your most demanding delivery requirements. Lengths of up to 28 meters can be bent.Where required the ‘U’ tubes can be pressure tested and stress relieved to suit your requirements.’U’ tubes bent fully in accordance with TEMA class R.

Send Inquiry Now

Heat Treatment on U bend parts

Heat Treatment Capabilities

Scope of Work:
We are fully equipped to perform heat treatment on bends, including a minimum of 150mm of the leg.

Heat Treatment Equipment:

Our heat treatment equipment is computer-controlled, with advanced data recording capabilities for precise monitoring and quality assurance.
For stainless steel and special alloy tubes, we use an argon protective atmosphere during the heat treatment process to ensure optimal results.

Types of Heat Treatment Offered:

Annealing: A process to soften the metal and relieve internal stresses.
Solution Annealing: A high-temperature heat treatment that dissolves precipitates, enhancing corrosion resistance and improving mechanical properties.
Stress Relieving: This treatment reduces residual stresses caused by welding or forming processes.

Send Inquiry Now

Related Products

Do you offer Emergency Delivery ?

Yes, we offer Emergency Delivery services. We have a wide range of materials available in stock, including:

Carbon Steel
Alloy Steel
Non-Ferrous Metals
Stainless Steel
Nickel Alloy
Titanium

These materials can be delivered quickly, either from stock or through expedited production, depending on your needs. Our reputation for supplying refineries with fast and on-time deliveries ensures that we can meet even the most demanding timelines.

By partnering with Acree Tube International, refineries and petrochemical plants benefit from significant cost and time savings. This eliminates the need for keeping extensive stock for shutdowns and maintenance.

In addition to emergency deliveries, we offer worldwide shutdown services, as well as long-term contracts with agreed stock levels for heat exchanger tubes used in your operations.

Rigorous Quality Control?

Yes, Factory NDT Process (Hydrostatic + Eddy Current Testing Footage) Comparison Table: Acree vs. Competitors │

☑️ 100% Full Inspection vs. Batch Sampling │

☑️ DNV Third-Party Verification vs. None │

☑️ 2-Year Warranty vs. 1-Year

What is the surface treatment cards you have?

Card 1: Electro-Polishing (EP) → 30% Lower Fouling Risk

Card 2: Nickel Plating → 60% Enhanced Acid Resistance

Card 3: Sandblasting → Improved Welding Adhesion

Global Case Studies？

Global Case Studies (Risk Mitigation)：

── Region Filter: North America | Europe | Middle East | Asia │

Case 1: Saudi Seawater Desalination Project (High-Salinity Environment) │ ─ Problem: 316L Corrosion Within 6 Months

Solution: Upgraded to Duplex Steel + Sandblasting │

Result: 3 Years Zero Leakage

Send Your Inquiry Today