SEAMLESS STAINLESS STEEL PIPE

SIZES:         1/8"NB - 24 "NB

GRADES:    TP304/304L/304N/304H, TP310S/310H , TP316/316L/316Ti/TP316H/316H/316LN, TP317/317L, TP317LN, TP321/321H, TP347/347H.  

Seamless stainless steel pipe is fully softened & descaled. In 5-7 metre random lengths. Tolerances &  testing to ASTM A 312/ASME SA312-A530. Conforming to NACE Standard MR-01-75(Latest Revision) Certificate to DIN 50049-3.1.B./EN 10 204-3.1.B.

SEAMLESS AND WELDED DUPLEX PIPE/SEAMLESS SUPER DUPLEX PIPE

SIZES:     1/2"NB - 8"NB (Seamless Duplex/Super Duplex)

SIZES:     6"NB - 24 "NB (Welded Duplex)

Duplex Grade. Seamless Ferritic/Austenitic Stainless Steel Pipe to ASTM A790 UNS S31803 (Duplex) UNS S32760 (Super Duplex) and ASTM A928 UNS S31803 (Welded Duplex), . Cold/Hot finished, solution annealed & descaled in random lengths 5-7.5 metres. Conforming to NACE Standard MR-0175(Latest Revision)

OTHER GRADES
Enquiries are welcome on grades such as 904L, 316TI, 347H, 304H and 6 Moly, 310 and 317L. We are also able to offer other grades on application including Duplex Fittings and Super Duplex Fittings.

Grade	Material number	C	Si	Mn	P	S	N	Cr	Mo	Ni	Ti	others
Ferritic or martensitic steels
X2CrTi12	1.4512	0.030	1.00	1.00	0.040	0.015		10.50to12.50			6×(C+N)to0.65
X6CrAl13	1.4002	0.08	1.00	1.00	0.040	0.015		12.00to14.00				0.10to0.30Al
X6Cr17	1.4016	0.08	1.00	1.00	0.040	0.015		16.00to18.00
X3CrTi17	1.4510	0.05	1.00	1.00	0.040	0.015		16.00to18.00			4×(C+N)+0.15 to 0.80
X12Cr13	1.4006	0.08 to 0.15	1.00	1.50	0.040	0.015		11.50to13.50		0.75
Austenitic steels
X5CrNi18-10	1.4301	0.07	1.00	2.00	0.045	0.015	0.11	17.00to19.50		8.00to10.50
X2CrNi19-11	1.4306	0.030	1.00	2.00	0.045	0.015	0.11	18.00to20.00		10.00to12.00
X2CrNiN18-10	1.4311	0.030	1.00	2.00	0.045	0.015	0.12to0.22	17.00to19.50		8.50to11.50
X6CrNiTi18-10	1.4541	0.08	1.00	2.00	0.045	0.015		17.00to19.00		9.00to12.00	5×C to 0.70
X6CrNiNb18-10	1.4550	0.08	1.00	2.00	0.045	0.015		17.00to19.00		9.00to12.00		10×Cto1.00Nb
X5CrNiMo17-12-2	1.4401	0.07	1.00	2.00	0.045	0.015	0.11	16.50to18.50	2.00to2.50	10.00to13.00
X2CrNiMo17-12-2	1.4404	0.030	1.00	2.00	0.045	0.015	0.11	16.50to18.50	2.00to2.50	10.00to13.00
X6CrNiMoTi17-12-2	1.4571	0.08	1.00	2.00	0.045	0.015		16.50to18.50	2.00to2.50	10.50to13.50	5×C to 0.70
X2CrNiMoN17-13-3	1.4429	0.030	1.00	2.00	0.045	0.015	0.12to0.22	16.50to18.50	2.50to3.00	11.00to14.00
X2CrNiMo18-14-3	1.4435	0.030	1.00	2.00	0.045	0.015	0.11	17.00to19.00	2.50to3.00	12.50to15.00
X3CrNiMo17-13-3	1.4436	0.05	1.00	2.00	0.045	0.015	0.11	16.50to18.50	2.50to3.00	10.50to13.00
X2CrNiMoN17-13-5	1.4439	0.030	1.00	2.00	0.045	0.015	0.12to0.22	16.50to18.50	4.00to5.00	12.50to14.50

Grade 304 / 304L / 304H DIN17456 DIN 17458 EN 10216-5 TC 1/2 Stainless Steel Seamless Pipe

 DIN17456 DIN 17458 EN 10216-5 TC 1/2 1.4301, 1.4307, 1.4404, Stainless Steel Seamless Pipe

Application:

• Food processing equipment, particularly in beer brewing, milk processing & wine making.
• Kitchen benches, sinks, troughs, equipment and appliances
• Architectural panelling, railings & trim
• Chemical containers, including for transport
• Heat Exchangers
• Woven or welded screens for mining, quarrying & water filtration
• Threaded fasteners
• Springs
• Ship building, onshore , offshore, Maire.
• Others

Chemical Composition:

Mechanical Properties:

Grade specifications:for 304 grade stainless steel

Size Range:

Final Finishing:

Solution Annealed & Pickled

Seamless Duplex Stainless Steel Pipes EN 10216-5 1.4462 / 1.4410, UNS32760(1.4501)

Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),

UNS32760(1.4501)

Chemical Composition

 Physical Properties

Seamless Duplex Stainless Steel Pipe ASTM A789 S32760, ASTM / ASME A789 / SA789

 Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),

UNS32760(1.4501)

Chemical Composition

 Physical Properties

Stainless Steel Welded Pipes DIN 17457 1.4301 / 1.4307 / 1.4401 / 1.4404 EN 10204-3.1B

grade	Material number	C	Si	Mn	P	S	N	Cr	Mo	Ni	Ti	others
Ferritic or martensitic steels
X2CrTi12	1.4512	0.030	1.00	1.00	0.040	0.015		10.50to12.50			6×(C+N)to0.65
X6CrAl13	1.4002	0.08	1.00	1.00	0.040	0.015		12.00to14.00				0.10to0.30Al
X6Cr17	1.4016	0.08	1.00	1.00	0.040	0.015		16.00to18.00
X3CrTi17	1.4510	0.05	1.00	1.00	0.040	0.015		16.00to18.00			4×(C+N)+0.15 to 0.80
X12Cr13	1.4006	0.08 to 0.15	1.00	1.50	0.040	0.015		11.50to13.50		0.75
Austenitic steels
X5CrNi18-10	1.4301	0.07	1.00	2.00	0.045	0.015	0.11	17.00to19.50		8.00to10.50
X2CrNi19-11	1.4306	0.030	1.00	2.00	0.045	0.015	0.11	18.00to20.00		10.00to12.00
X2CrNiN18-10	1.4311	0.030	1.00	2.00	0.045	0.015	0.12to0.22	17.00to19.50		8.50to11.50
X6CrNiTi18-10	1.4541	0.08	1.00	2.00	0.045	0.015		17.00to19.00		9.00to12.00	5×C to 0.70
X6CrNiNb18-10	1.4550	0.08	1.00	2.00	0.045	0.015		17.00to19.00		9.00to12.00		10×Cto1.00Nb
X5CrNiMo17-12-2	1.4401	0.07	1.00	2.00	0.045	0.015	0.11	16.50to18.50	2.00to2.50	10.00to13.00
X2CrNiMo17-12-2	1.4404	0.030	1.00	2.00	0.045	0.015	0.11	16.50to18.50	2.00to2.50	10.00to13.00
X6CrNiMoTi17-12-2	1.4571	0.08	1.00	2.00	0.045	0.015		16.50to18.50	2.00to2.50	10.50to13.50	5×C to 0.70
X2CrNiMoN17-13-3	1.4429	0.030	1.00	2.00	0.045	0.015	0.12to0.22	16.50to18.50	2.50to3.00	11.00to14.00
X2CrNiMo18-14-3	1.4435	0.030	1.00	2.00	0.045	0.015	0.11	17.00to19.00	2.50to3.00	12.50to15.00
X3CrNiMo17-13-3	1.4436	0.05	1.00	2.00	0.045	0.015	0.11	16.50to18.50	2.50to3.00	10.50to13.00
X2CrNiMoN17-13-5	1.4439	0.030	1.00	2.00	0.045	0.015	0.12to0.22	16.50to18.50	4.00to5.00	12.50to14.50

Standard Specification: 

ASTM A249 / A249M - 10a Standard Specification for Welded Austenitic Steel Boiler, Superheater, 

Heat-Exchanger, and Condenser Tubes 

ASTM A269 - 10:Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing 

for General Service 

ASTM A312 / A312M - 12:Standard Specification for Seamless, Welded, and Heavily Cold Worked 

Austenitic Stainless Steel Pipes 

ASTM A358/A358M-08a:Standard Specification for Electric-Fusion-Welded Austenitic

ASTM A778 - 01(2009)e1:Standard Specification for Welded, Unannealed Austenitic Stainless 

Steel Tubular Products 

ASTM A789 / A789M - 10a:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Tubing for General Service 

ASTM A790 / A790M - 11:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Pipe 

Others like BS, JIS , DIN , EN , GOST standard we all can supply .

Material Grade:

Size Range:

Super Duplex Welded Pipe : A790  S32304, S32750, S32760 , S31500, 6MO


Standard Specification:
ASTM A249 / A249M - 10a Standard Specification for Welded Austenitic Steel Boiler, Superheater,
Heat-Exchanger, and Condenser Tubes
ASTM A269 - 10:Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing
for General Service
ASTM A312 / A312M - 12:Standard Specification for Seamless, Welded, and Heavily Cold Worked
Austenitic Stainless Steel Pipes
ASTM A358/A358M-08a:Standard Specification for Electric-Fusion-Welded Austenitic
ASTM A778 - 01(2009)e1:Standard Specification for Welded, Unannealed Austenitic Stainless
Steel Tubular Products
ASTM A789 / A789M - 10a:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Tubing for General Service
ASTM A790 / A790M - 11:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Pipe
Others like BS, JIS , DIN , EN , GOST standard we all can supply .

Material Grade:

Size Range:

U-Bend Tube are widely used in Heat Exchanger Systems. Heat-Exchanger Equipment on the basis of 

Seamless Stainless U-Tubes and Welded Stainless U bend Tube is essential in strategically important and 

critical felds---Nuclear And Petrochemical Machine Building.

XINGZHOU Group Start to Produce U Bending Tube Since 2006,Up to now already supply more than 

30000 tons Stainless Steel U Bend Tube to 35 countries.

The U-Bend Tube Comply With The Following Standards:

1.    ASTM A688/ASME SA688

2.    ASTM A803/ASME SA803

3.    ASTM A556/ASME SA556

Steel Grade

Tube Of Other Alloys And Steel Grades Can Be Produced Upon Agreement.

Technical Requirements:

Straight Tubes Standard Specification For Bending:

ASME SA 213; ASME SB 163; ASME A789, ASME SA268, ASME SA269, etc.

Marking: Before Bending By Marking Machine All Over The Tube Length (Bent Section After Heat 

Treatment Without Marking)

Note: Marking is also possible After Bending On The Straight Parts Of U-Bending Tube.

U-Bend Tubes:

-TEMA RCB 2.31 Standard Of The Tubular Exchanger Manufacturers Association (9th Edition).

-ASTM A688/ASME SA688 Standard Specification For Welded Tubes Of Austenitic Corrosion Resistant 

Steel Grade Designed For Feed Water Boilers.

-ASTM B163/ASME SA163 Standard Techinical Requirements For Tubes Of Nickel And Nickel Alloy For 

Condensers And Heat Exchangers.

-Customer Specifications.

Bending Radius: From 1.5*OD(Outside Diameter) To 1500mm

When Ordering Tubes With Radius less or equal to 1.5*OD, It Is Necessary To Agree Precision Of Geometrics.

Straight Tubes Maximum Length:(Before Bending): 35000 mm.

Leg Length: Min 1 Meter, Max. 16500 mm (For Max R=1500mm)

Note: Other Size Are Available Upon Agreement.

Heat Treatment: Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg).

Hydrostatic Test After U Bending: Maximum Test Pressure 600 Bar, Soaking 10 Sec. With 

Dematerialized Water. Compressed Air Cleaning After Hydro-Test.

Packaging: In Strong Transport-Worthy Pre-fumigated wooden boxes of corresponding dimensions for 

each tube Length, Radius, Diameter, According To PO requirements as well as wrapped In polyethylene 

films With soft plastic caps on both end of Tube.

Stainless Steel U Bend Tube, Eddy Current Test, Hydrostatic Test , Ultrasonic Test , Air Pressure Test , A213/SA213

Stainless Steel U Bend Tube ASME A789, ASME SA213 TP317 / TP317L / TP321 / TP321H

U-Bend Tube are widely used in Heat Exchanger Systems. Heat-Exchanger Equipment on the basis of 

Seamless Stainless U-Tubes and Welded Stainless U bend Tube is essential in strategically important and 

critical felds---Nuclear And Petrochemical Machine Building.

Xinzhou Group Start to Produce U Bending Tube Since 2006, Up to now already supply more than 

30000 tons Stainless Steel U Bend Tube to 35 countries.

The U-Bend Tube Comply With The Following Standards:

1.    ASTM A688/ASME SA688

2.    ASTM A803/ASME SA803

3.    ASTM A556/ASME SA556

Steel Grade:

Tube Of Other Alloys And Steel Grades Can Be Produced Upon Agreement

Technical Requirements:

Straight Tubes Standard Specification For Bending:

ASME SA 213; ASME SB 163; ASME A789, ASME SA268, ASME SA269, etc.

Marking: Before Bending By Marking Machine All Over The Tube Length (Bent Section After Heat 

Treatment Without Marking)

Note: Marking is also possible After Bending On The Straight Parts Of U-Bending Tube.

U-Bend Tubes:

-TEMA RCB 2.31 Standard Of The Tubular Exchanger Manufacturers Association (9th Edition).

-ASTM A688/ASME SA688 Standard Specification For Welded Tubes Of Austenitic Corrosion Resistant 

Steel Grade Designed For Feed Water Boilers.

-ASTM B163/ASME SA163 Standard Techinical Requirements For Tubes Of Nickel And Nickel Alloy For 

Condensers And Heat Exchangers.

-Customer Specifications.

Bending Radius: From 1.5*OD(Outside Diameter) To 1500mm

When Ordering Tubes With Radius less or equal to 1.5*OD, It Is Necessary To Agree Precision Of Geometrics.

Straight Tubes Maximum Length:(Before Bending): 35000 mm.

Leg Length: Min 1 Meter, Max. 16500 mm (For Max R=1500mm)

Note: Other Size Are Available Upon Agreement.

Heat Treatment: Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg).

Hydrostatic Test After U Bending: Maximum Test Pressure 600 Bar, Soaking 10 Sec. With 

Dematerialized Water. Compressed Air Cleaning After Hydro-Test.

Packaging: In Strong Transport-Worthy Pre-fumigated wooden boxes of corresponding dimensions for 

each tube Length, Radius, Diameter, According To PO requirements as well as wrapped In polyethylene 

films With soft plastic caps on both end of Tube.

Features :

• 'U' bending is done by cold working process.
• 'U' bending is done to the required radius as per customer drawings.
• The bend portion and six inch leg is stress relieved by resistance heating.
• Inert gas (Argon) is passed through it at the required flow rate to avoid oxidation in ID.
• The radius is checked for its OD and wall thinning with the recommended specification.
• The physical properties and micro-structure is checked at three different position.
• Visual inspection for waviness and cracks is done with Dye Penetrant Test.
• Each tube is then hydro tested at the recommended pressure to check for leakage.
• Cotton ball test is done to check the ID cleanliness of the tube.
• Thereafter pickled, dried, marked and packed.
• All procedure is strictly followed as per TEMA "C" and ASTM A-688.