Carbon is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up only about 0.025 percent of Earth's crust. Three isotopes occur naturally, ¹²C and ¹³C being stable, while ¹⁴C is a radionuclide, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity.
Tianjin Longford Meatal Products.,Ltd is a manufacturer of steel pipe , steel plate, copper tube, copper sheet, stainless steel tube, stainless steel sheet, steel bar, aluminum tube, aluminum sheet, steel beam with well-equipped testing facilities and strong technical force.
With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in mechanical manufacturing , metallurgical minerals , building materials, shipping, aircraft, automobile and other industries.
Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.
We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
Shandong Zhongheng Iron and Steel Group Co., Ltd. is a professional stainless steel storage, sales and processing enterprise. It is one of the earliest companies involved in the stainless steel industry. After years of market tests, it has developed steadily. The annual sales volume is about 50 million tons. A certain influential stainless steel sales enterprise.
prise integrating sales, processing, cutting and transportation, and wholeheartedly provides you with one-stop service. The company has formed a cluster of high-efficiency, energy-saving and long-life steel products mainly based on stainless steel, cold-rolled silicon steel, and high-strength and tough series steel. Stainless steel products cover the full range of plate and strip line pipes, ultra-wide, ultra-thick and ultra-thin extreme specifications, nib steel, hand-tear steel, nuclear power steel, railway steel, duplex stainless steel, high-grade silicon steel for new energy vehicles, etc. Products are well-known at home and abroad.
ss steel have entered key industries such as petroleum, petrochemicals, railways, automobiles, shipbuilding, containers, and coinage. Africa, Europe, the Middle East, Southeast Asia and other parts of the world, it is widely praised in the international market, and the export volume has always maintained a leading position in China.
ity inspection team, coupled with dedicated and dedicated front-line masters, their hard work provides a strong guarantee for our excellent products. In line with the business philosophy of pragmatism, professional research, perseverance and contribution, with strong strength, rich and complete specifications and varieties, perfect quality system, reasonable price, and excellent service, it has been consistently recognized by customers for more than ten years!