Asbestos Rubber Sheet with Wire Net Strengthening
Model:KJXB450
Asbestos rubber sheet with steel wire net strengthening, produced to GB/T 539-1995 by compound heating and compression molding of asbestos fibre, rubber compound and an embedded steel wire net. Grades KJXB450, KJXB350, KJXB250, max working temperature up to +450 °C, working pressure up to 8 MPa. Standard thickness 1.2–6.0 mm, sheet sizes 4100 × 1500 mm to 1270 × 1270 mm. Available plain or graphite coated. Used for steam, water, air and gas flange joints. Material certificate supplied. Factory-direct price, 7–15 day lead time.
Asbestos Rubber Sheet with Wire Net Strengthening — Steel-Wire-Reinforced Compressed Asbestos Sheet for Steam, Water, Gas & Air Flange Joints
Asbestos Rubber Sheet with Wire Net Strengthening — compressed asbestos fibre sheet with an embedded steel wire net for high-pressure, high-temperature flange joints.
Asbestos Rubber Sheet with Wire Net Strengthening is a compressed asbestos fibre sheet produced from high-quality asbestos fibre and rubber compound, with a steel wire net embedded in the middle and formed by compound heating and compression molding. The embedded wire net dramatically raises tensile strength, blow-out resistance and creep resistance, making the sheet suitable for high-pressure flange joints in water, steam, air and gas pipelines. It can be supplied with or without a graphite surface coating. It is supplied in three grades — KJXB450, KJXB350 and KJXB250 — to suit different temperature and pressure requirements.
- Material: high-quality asbestos fibre + rubber compound, steel wire net embedded, compound heat and compression molded
- Grades: KJXB450, KJXB350, KJXB250
- Max working temperature: up to +450 °C (KJXB450 grade)
- Working pressure: up to 8 MPa
- Standard: GB/T 539-1995
- Surface option: plain or graphite coated
- Standard sizes: 4100 × 1500 mm, 2000 × 1500 mm, 1500 × 1360 mm, 3810 × 1270 mm, 1270 × 1270 mm, 1500 × 1500 mm; thickness 1.2–6.0 mm; custom sizes available
- Documentation: material certificate and dimensional inspection report with each batch
What Is Asbestos Rubber Sheet with Wire Net Strengthening?
Asbestos Rubber Sheet with Wire Net Strengthening is a compressed asbestos fibre sheet in which a steel wire net is embedded between layers of asbestos-rubber compound, then formed by compound heating and compression molding. The result is a high-density, dimensionally stable sheet that combines the chemical and thermal resistance of asbestos fibre with the mechanical strength of a metal reinforcement.
Because the wire net is embedded through the full sheet thickness, the sheet resists extrusion and blow-out under high flange load, and it resists creep relaxation better than plain compressed asbestos sheet. This makes it a preferred sealing material for saturated and superheated steam lines, high-pressure water and gas pipelines, and air services where plain sheet would extrude or blow out. The sheet can be supplied with a graphite surface coating to improve release and reduce sticking during maintenance. It is available in three grades — KJXB450, KJXB350 and KJXB250 — which differ in tensile strength, temperature limit and steam airtightness performance, so the correct grade can be selected to match the flange rating and process conditions.
Available Grades
| Grade | Max Working Temperature | Tensile Strength | Steam Airtightness Test |
|---|---|---|---|
| KJXB450 | +450 °C | ≥21.0 MPa | 440–450 °C at 13–14 MPa, 30 min no puncture |
| KJXB350 | +350 °C | ≥16.0 MPa | 340–350 °C at 9–10 MPa, 30 min no puncture |
| KJXB250 | +250 °C | ≥11.0 MPa | 240–250 °C at 7–8 MPa, 30 min no puncture |
All three grades are produced to GB/T 539-1995. Maximum working pressure is 8 MPa. Confirm the exact grade against your flange rating and process conditions.
Technical Specification
| Property | KJXB450 | KJXB350 | KJXB250 |
|---|---|---|---|
| Tensile strength (MPa) | 21.0 | 16.0 | 11.0 |
| Aging coefficient | 0.9 | ||
| Burning loss (%) | 27 | 29 | |
| Density (g/cm³) | 1.6 – 2.0 | ||
| Compressibility (%) | 12 ± 5 | ||
| Rebound degree | 42 | 40 | |
| Pliability | No crack | ||
| Stress relaxation | 50 | ||
Values are typical for standard production to GB/T 539-1995. Confirm the exact grade against your flange rating and process medium.
Standard Sheet Sizes
| Length (mm) | Width (mm) | Thickness (mm) |
|---|---|---|
| 4100 | 1500 | 1.2 – 6.0 |
| 2000 | 1500 | 1.2 – 6.0 |
| 1500 | 1360 | 1.2 – 6.0 |
| 3810 | 1270 | 1.2 – 6.0 |
| 1270 | 1270 | 1.2 – 6.0 |
| 1500 | 1500 | 1.2 – 6.0 |
Other sizes are available on request or cut to customer requirements. Packing: wooden pallet of approximately 1000 kg or 2000 kg net each.
Typical Applications
- Flange joints in saturated and superheated steam pipelines
- High-pressure water pipeline flange connections
- Air and gas pipeline flange joints
- High-pressure industrial process piping where blow-out resistance is required
- Boiler, heat exchanger and pressure vessel manway and handhole gaskets
- Any flange joint requiring a combination of high temperature, high pressure and creep resistance
Why Buy Asbestos Rubber Sheet with Wire Net from Kaxite Sealing
We compound and calender the sheet in-house
Ningbo Kaxite Sealing Materials Co., Ltd. operates its own compounding, wire-net embedding, calendering and vulcanising facility in Ningbo, China. We control asbestos fibre grade, rubber compound ratio, wire mesh specification, sheet density and curing cycle — so the sheet you receive is consistent from batch to batch and conforms to GB/T 539-1995.
Quality control on every batch
- Incoming asbestos fibre and rubber verified for grade and purity
- Wire mesh specification and placement recorded for each batch
- Tensile strength, density and compressibility tested on every batch
- Thickness and width inspected on 100% of finished sheets
- Steam airtightness spot-tested per grade
- Material certificate and dimensional report supplied with each shipment
- Third-party inspection (SGS, BV, TUV) arranged on request
Custom sizes and die-cut gaskets
- Standard thickness 1.2 mm to 6.0 mm; custom thickness on request
- Standard sheet sizes 4100 × 1500 mm down to 1270 × 1270 mm; custom sizes available
- Graphite surface coating available
- Die-cut gaskets, rings, washers and strips produced to drawing
Terms that suit project procurement
- No minimum order quantity on standard sizes — sample and trial orders welcome
- Stock sizes ship in 7–15 days; custom sizes and die-cutting in 15–25 days
- Export packing with protective wrap and wooden pallet
- 24 hours × 7 days after-sales response
What to Send for an Accurate Quotation
| Information | Example | Why We Need It |
|---|---|---|
| Grade | KJXB450 | Confirms temperature and pressure rating |
| Thickness | 3.0 mm | Calender setup and price |
| Sheet size | 1500 × 1500 mm | Cutting layout and packing |
| Surface | Plain or graphite coated | Confirms surface finish |
| Quantity | 100 sheets | Sets production scheduling and pricing tier |
| Application | Steam pipeline flange, 400 °C | Confirms grade and mesh selection |
| Die-cut drawing (if applicable) | PDF or DXF | Confirms tooling and finished part price |
Get Your Asbestos Rubber Sheet with Wire Net Quotation
Send your required grade, thickness, sheet size and quantity. Our technical sales team will reply within 2 business hours with a factory price and available stock sizes.
Frequently Asked Questions
What is the difference between KJXB450, KJXB350 and KJXB250?
The three grades differ in tensile strength and maximum working temperature. KJXB450 has the highest tensile strength (≥21.0 MPa) and is rated to +450 °C, with a steam airtightness test at 440–450 °C and 13–14 MPa. KJXB350 is rated to +350 °C with a tensile strength of ≥16.0 MPa. KJXB250 is the economy grade, rated to +250 °C with a tensile strength of ≥11.0 MPa. All three are produced to GB/T 539-1995 and have a maximum working pressure of 8 MPa.
Why choose a wire-net reinforced sheet instead of plain compressed asbestos sheet?
The embedded steel wire net raises tensile strength, blow-out resistance and creep resistance. This makes the wire-net reinforced sheet the preferred choice for high-pressure steam, water, air and gas flange joints, where plain compressed asbestos sheet could extrude or blow out under high flange load or thermal cycling.
Is a graphite-coated version available?
Yes. The sheet can be supplied with or without a graphite surface coating. The graphite coating improves release and reduces sticking during maintenance, which is useful for large flange joints and for gaskets that may be removed and replaced on a regular maintenance schedule.
Can you cut the sheet into gaskets to my drawing?
Yes. We cut, punch and die-cut the sheet into gaskets, rings, washers, strips and custom shapes to your drawing. Send your drawing in PDF or DXF and we will confirm tooling and lead time. Standard thickness is 1.2 mm to 6.0 mm, and standard sheet sizes range from 4100 × 1500 mm down to 1270 × 1270 mm, with custom sizes available.
What are your MOQ, lead time and payment terms?
There is no minimum order quantity on standard sizes — sample and trial orders are welcome. Stock sizes ship in 7–15 days; custom sizes and die-cutting take 15–25 days. Standard payment terms are 30% T/T deposit with the balance against copy of B/L, or L/C at sight for larger orders.
Do you supply material certificates?
Yes. Every batch is supplied with a material certificate covering grade, tensile strength, aging coefficient, burning loss, density, compressibility, rebound degree, pliability and stress relaxation to GB/T 539-1995, plus a dimensional inspection report. Third-party inspection can be arranged on request.
Send Inquiry
Contact Info
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Address
No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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Email
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