Downhill Bicycle Tube (Thorn Resistant)

Category Tag

The  Ifan Thorn Resistant tube increases the thickness of the inner and outer walls based on the standard inner tube, especially the outer wall. The ultra-thick and super-hard surface can effectively prevent the inner tube from being punctured to achieve the purpose of safe riding.

Usually, the Thorn Resistant tube has two thicknesses to choose from,  TR (3.5mm) and STR（4.1mm）.

Additional information

Size

10—29 inches
package

Color box, Plastic Shinking bag
Valve

AV, AV40mm, DV, DV40mm, FV, FV40mm, FV60mm, FV80mm
Others

Other information, please check below product details.
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Structure&Process

The butyl inner tube formula includes several parts: skeleton material, filler, vulcanization system, processing aid, anti-aging agent
  • The skeleton materials mainly include butyl rubber, butyl rubber reclaimed rubber, and EPDM rubber.
  • The main fillers are carbon black, calcium rubber, etc.
  • Vulcanization system: The vulcanization system of the butyl inner tube is more complicated and should be adjusted according to equipment and process conditions. The vulcanization system is mainly M+TT.
  • Processing aids: mainly paraffin oil, if necessary, add some tackifying resins, etc., stearic acid, ointment, and other lubricants can also be used.
  • Anti-aging agent: Mainly use 4020, 4010NA and paraffin, etc.
  • Every tube also needs a valve, which is bonded to the tube during the vulcanizing process.
Rubber Mixing–Filter–Extrusion–Joint–Vulcanize–Inspection–Fold–Packing

Product details：

BASIC INFORMATION

 

Product Butyl Bicycle Tube Palce of Origin Jiangsu, China
OEM Yes Warantee 2 years
Brand Ifan Material Butyl Rubber
Quality A Grade Color Black
Production Capacity 1,500,000pcs/month Delivery Time 30–40 days

 

VALVE TYPE

 

AV Schrader, Auto, Moto. Length 35 mm.
DV Bicycle, Woods, Hollands. Length 26.5 mm or 40 mm.
FV Presta, Sclaverand, French. Length 33 mm/40mm/60mm/80mm.
CR202 Bent valve. Length 45mm

ITEM LIST

SIZE Inner Wall Out Wall  width Fold Length Weight g
±0.05mm ±0.05mm ±0.50mm ±5.00mm 5%g
121/2×21/4 TR 1.7 3.6 38 355 169
14×1.75-2.125 TR 1.7 3.6 38 465 221
16×1.75-2.125 TR 1.7 3.6 38 535 254
16×2.125 TR 1.7 3.6 46 545 314
18×1.75-2.125 TR 1.7 3.6 38 630 299
18×2.125 TR 1.7 3.6 46 640 368
20×1.75-2.125 TR 1.7 3.6 38 685 326
20×2.125 TR 1.7 3.6 46 695 400
22×1.75 TR 1.7 3.6 38 760 361
24×13/8 TR 1.7 3.6 28 865 303
24×1.75-2.125 TR 1.7 3.6 38 845 402
24×2.125 TR 1.7 3.6 46 855 492
26×13/8 TR 1.7 3.6 28 950 333
26×1.50-1.75 TR 1.7 3.6 34 925 393
26×1.75-2.125 TR 1.7 3.6 38 930 442
26×2.125 TR 1.7 3.6 46 940 541
27×11/4 TR 1.7 3.6 25 1010 316
700×18C-25C TR 1.7 3.6 18 980 221
700×35C-45C TR 1.7 3.6 28 1000 350
28×11/2 TR 1.7 3.6 34 1025 436
SIZE Inner Wall Out Wall  width Fold Length Weight g
±0.05mm ±0.05mm ±0.50mm ±5.00mm 5%g
121/2×21/4 STR 2.2 4.2 38 355 204
14×1.75-2.125 STR 2.2 4.2 38 465 267
16×1.75-2.125 STR 2.2 4.2 38 535 307
16×2.125 STR 2.2 4.2 46 545 379
18×1.75-2.125 STR 2.2 4.2 38 630 362
18×2.125 STR 2.2 4.2 46 640 445
20×1.75-2.125 STR 2.2 4.2 38 685 393
20×2.125 STR 2.2 4.2 46 695 483
22×1.75 STR 2.2 4.2 38 760 436
24×13/8 STR 2.2 4.2 28 865 366
24×1.75-2.125 STR 2.2 4.2 38 845 485
24×2.125 STR 2.2 4.2 46 855 594
26×13/8 STR 2.2 4.2 28 950 402
26×1.50-1.75 STR 2.2 4.2 34 925 475
26×1.75-2.125 STR 2.2 4.2 38 930 534
26×2.125 STR 2.2 4.2 46 940 653
27×11/4 STR 2.2 4.2 25 1010 381
700×18C-25C STR 2.2 4.2 18 980 266
700×35C-45C STR 2.2 4.2 28 1000 423
28×11/2 STR 2.2 4.2 34 1025 526

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