manufacturer ability:thickness: 0.1mm-80mm, dianmeter: 5mm-12000mm, length:20mm-3000mm. (integral moulding) Tongpeng brand expansion joint products are widely applied to the scopes such as the petroleum, petro-chemistry, chemical industry, electric power, thermal energy, water conservation, metallurgy, aviation, astronautics, ship, nuclear industry and pressure vessel and so on, and has been ...