China Nickel Alloy Pipe manufacturer

TOBO ALLOY GROUP

TOBO Alloy Group is a mature, steady and energetic high-tech company, specializing in manufacture of high-temperature alloys and corrosion resistant alloys, such as Hastelloy, Haynes, Monel, Inconel, Incoloy and nickel.

News

December 1, 2021

ASTM A312 TP321 Precision Seamless Steel Black Phosphate Cold-Rolled Seamless Tube​

ASTM A312 TP321 Precision Seamless Steel Black Phosphate Cold-Rolled Seamless Tube​

Detailed Information

 

Cold drawn shaped seamless steel pipe Features: high quality raw materials, wick drawing finished, no oxidation heat treatment. Pipe size and high precision, smooth surface no dents, good finish, the high surface cleanliness, excellent mechanical properties. Suitable for machining of automotive components.

 

Our products are widely used in engineering machinery, machine tool industry, hydraulic industry, hydraulic lines, shipbuilding industry, automotive tubing, heavy vehicles,; special vehicles, locomotives, heavy machinery, forging machinery, diesel engines, injection molding machines, compressors, boiler, power generation equipment.


 

Alloy Steel ubend
ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91
Duplex Steel ubend
ASTM A 815 UNS NO S 31803, S 32205, S 32760, S 32750
Copper Nickel
C70600(90:10), C71500(70:30), C71640.

Stainless Steel Tubes Size for Heat Exchanger
Inch to mm Chart

Inches Decimal Millimeters
1/16″ .0625 1.59 mm
1/8″ .1250 3.18 mm
3/16″ .1875 4.76 mm
1/4″ .2500 6.35 mm
5/16″ .3125 7.94 mm
3/8″ .3750 9.53 mm
7/16″ .4375 11.11 mm
1/2″ .5000 12.70 mm
9/16″ .5625 14.29 mm
5/8″ .6250 15.88 mm
11/16″ .6875 17.46 mm
3/4″ .7500 19.05 mm
13/16″ .8125 20.64 mm
7/8″ .8750 22.23 mm
15/16″ .9375 23.81 mm
1″ 1.00 25.40 mm
1 1/4″ 1.25 31.75 mm
1 1/2″ 1.50 38.10 mm
2″ 2.00 50.80 mm


Stainless Steel ubend :
ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L, 316TI, 316H, 304L
Carbon Steel ubend
ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.
Low Temperature Carbon Steel
ASTM A420 WPL3 / A420WPL6
Alloy Steel ubend
ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91
Duplex Steel ubend
ASTM A 815 UNS NO S 31803, S 32205, S 32760, S 32750
Copper Nickel
C70600(90:10), C71500(70:30), C71640.

 

Standard ASME/ANSI B16.9
Size 1/2’’~48’’(Seamless);16’’~72’’(Welded)
Wall thickness Sch5~Sch160XXS
Manufacturing process Push, Press, Forge, Cast, etc.
Material Carbon steel, stainless steel, alloy steel, duplex stainless, nickel alloy steel
Carbon steel ASTM A234 WPB, WPC;
Stainless steel 304/SUS304/UNS S30400/1.4301
304L/UNS S30403/1.4306;
304H/UNS S30409/1.4948;
309S/UNS S30908/1.4833
309H/UNS S30909;
310S/UNS S31008/1.4845;
310H/UNS S31009;
316/UNS S31600/1.4401;
316Ti/UNS S31635/1.4571;
316H/UNS S31609/1.4436;
316L/UNS S31603/1.4404;
316LN/UNS S31653;
317/UNS S31700;
317L/UNS S31703/1.4438;
321/UNS S32100/1.4541;
321H/UNS S32109;
347/UNS S34700/1.4550;
347H/UNS S34709/1.4912;
348/UNS S34800;
Alloy steel ASTM A234 WP5/WP9/WP11/WP12/WP22/WP91;
ASTM A860 WPHY42/WPHY52/WPHY60/WPHY65;
ASTM A420 WPL3/WPL6/WPL9;
Duplex steel ASTM A182 F51/S31803/1.4462;
ASTM A182 F53/S2507/S32750/1.4401;
ASTM A182 F55/S32760/1.4501/Zeron 100;
2205/F60/S32205;
ASTM A182 F44/S31254/254SMO/1.4547;
17-4PH/S17400/1.4542/SUS630/AISI630;
F904L/NO8904/1.4539;
725LN/310MoLN/S31050/1.4466
253MA/S30815/1.4835;


 


Packing and Shipping
Package:Standard export carton packing.
Delivery time:stock 7-10 workign days after confirming order,detail delivery date should be decided according to
production season and order quantity.

 

latest company news about ASTM A312 TP321 Precision Seamless Steel Black Phosphate Cold-Rolled Seamless Tube​  0

 


TEST CERTIFICATE
Mill Test Certificate as per EN 10204 / 3.1
Advanced capabilities for U-bent tubes:

  1. Reliable bending machines
  2. Precision bending dies
  3. Eddy current test before bending
  4. Bending up to 105’(32m) developed length
  5. Electric resistance stress relief annealing after bending
  6. Hydrostatic test after bending
  7. OD and WT reduction Testing
  8. Full bending radius and tube legs tolerance check
  9. Stack-rack boxing



2) U Bend Tube Minimum tube wall thickness in the bend part (T min)T(min) ≥ (SW × (2×R + D))/( 2× (R+D)
where: SW is smallest wall thickness
D Nominal outside diameter
R radius
3) U Bend Tube Radius tolerance
1) for R 100 mm +/- 3 mm
2) for R ≥ 100 mm +/- 5 mm
4). U bend Pipe Straightness tolerance max. 1,5 mm per 1 m
U Bend Tube ends: plain, vertically cut to the tube axis
U Bend Tube OD in mm can be bent upon agreement: 15.8 16.0 17.0 18.0 19.05 20.0 21.3 25.4 26.7 31.8 32.0 38.1mm

U bend Tube Initial Length
Maximum lengths of 27000mm can be supplied on request

 

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