Shandong hengtong expansion joints manufacturing Co., Ltd. It is a large-sale expansion joints manufacturing enterprise integrating research and development, manufacture, marketing and service into a whole.

After years of development, the company has obtained grade a qualification of manufacture license of special equipment people's republic of China, u. S. Asme "u" stamp and ISO9001-2008 quality system certification, EU PED-CE certification is now in the process of taking. And the company has become tier one supplier of sinopec, subsidiary of cnpc, subsidiary of cnooc, supplier of shenhua coal oil making and tier one supplier of China national chemical corp. Expansion joints products include pressure pipe bellows expansion joints, pressure vessel wave expansion joints, metal bellows, metal hoses, PTFE compensators, rubber compensators and non-metal compensators and so on, there are 6 categories of 20 series, more than 2000 specifications. All the products are optimized to design and produce and have sophisticated quality assurance system.

Based on this, the company designed and manufactured its own hydraulic press which is also the largest hydraulic press all over the world-22, 000t hydraulic press. This equipment means our major equipments processing capacity have made a new leap in our petrochemical and coal chemical industry, which is of significance to accelerate the revitalization of major equipment manufacturing industry. So far, shandong hengtong expansion joints manufacturing Co., Ltd has formed a complete series of hydraulic press of 50t to 22, 000t, the total number of hydraulic press processing equipment is up to 13 sets, covering 10 hectares with the building area of more than 50, 000m2. In addition, the company also owns numbers of large-scale hoisting devices and all kinds of processing manufacturing equipments of more than 360 sets such as φ 6m, φ 5m, φ 3.5m andφ 1.6m vertical lathes, large-scale heat treatment furnace, plate bending rolls, plasma welding machines, argon arc welding machines, submerged arc welding machines, laser welding machines and so on, the company build rt detection room, physio-chemical laboratory, performance testing laboratory, pressure testing laboratory, and also have testing equipments such as hydrostatic testing machines, pneumatic testing machines, helium mass spectrometer leak detector and so on. Supporting facilities cover atmospheric and vacuum distillation, catalytic cracking, reforming, coal oil, crude oil terminal, oil reserves, oil and gas pipeline, ethylene, fertilizer, methanol, nitric acid, sulfuric acid, hydrochloric acid, caustic soda, soda ash, natural gas purification, space division and air cooling, flare system, heat supply network and so on. In addition to the increasing domestic market share, our expansion joints products are exported to nearly 20 countries such as u. S., Canada, Korea, Japan, Russia, Australia and Brazil and so on.

• According to the existing processing and manufacturing capacity of the company, the metal bellows expansion joints used for pipes by hydraulic pressure integral forming techniques has a maximum dn up to 10m with layers up to 15 and corrugations up to 16. The structural shape is determined by working conditions(then the product list). The pressure vessels by integral forming techniques and multi-corrugation(including single-corrugation) thick wall metal wave expansion joints used for heat exchanger choose non ferrous materials including black steel, austenitic stainless steel, duplex stainless steel, nickel base alloy, hastelloy alloy, high-alloy steel and titanium, zirconium and hafnium. Their maximum dn can be up to 6m, the maximum corrugations can be up to 4, the maximum thickness of the wall is up to 70mm, the pressure range is from negative pressure to 25 mpa, the temperature range can be from -196 to 1200.