What is the difference between ordinary carbon steel and SPA-H section steel

The company now has SPA-H section steel oversea market department, sales and supply department, finance department, logistics department, technical equipment department, quality management department, production department and other departments. The staff with college degree or above accounted for more than 80%, and there were more than SPA-H section steel 30 professional and technical personnel. The LSAW pipe production line can produce welded pipes with Φ350-1800mm, wall thickness 6-80mm, and length 2-12m.

S355N is a kind of weldable fine grain structural steel grade under EN10025-3 standard. It is often delivered in normalized or normalized rolled condition. There are various shapes available for SPA-H section steel, S355N: steel plates, strip and steel sections. When producing this steel S355N plates, dimension, tolerances on thickness, width, length and shape shall be in accordance with the requirement given in the order by reference to the relevant documents according to EN10025-1 standard.

The main difference between SPA-H section steel, 45# steel plate and boiler steel plate is the difference of carbon content and impact toughness. 45# steel is a high-quality carbon structural steel, which is expressed by the number of ten thousand percent of the average carbon content. The 45# steel represents the high-quality carbon structural steel with 0.45 percent carbon content. The high-quality carbon structural steel contains less harmful impurity elements (S, P) and non-metallic inclusions, and has excellent plasticity, toughness and processing technology.

Low alloy high strength steel is a kind of engineering structural steel developed by adding a small amount of Mn, Si and a small amount of Nb, V, Ti, Al and other alloy elements on the basis of carbon structural steel, SPA-H section steel. The so-called low alloy means that the total amount of alloying elements in steel is less than 3%. High strength is relative to carbon engineering structural steel. The development principle of low alloy high strength steel is to use as few alloy elements as possible to obtain as high comprehensive mechanical properties as possible, so as to meet the requirements of use and low cost.

Seamless pipes material and specification
API 5L Gr.B, SPA-H section steel A106 Gr.B, ASTM A53 Gr.B, ST37.0, ST35.8, St37.2, St35.4/8,St42,St45,St52,St52.4, STP G38, STP G42, STS42STPT49STS49
Sizes(mm): 0.12-2.0mm*600-1250mm
Wall Thickness(mm):1.2mm-40mm
Certificates: API5L ISO 9001:2008 TUV SGS BV etc
Surface: Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE

It is a modern high-tech professional enterprise integrating scientific research, SPA-H section steel production and sales. The company is mainly engaged in the manufacture, installation and commissioning of boiler and pressure vessel, chemical, metallurgical, petroleum and other equipment, as well as SPA-H section steel process technology development, technology transfer and related technical consulting and technical services.

The results of adopting two-level SPA-H section steel service system and implementing standardized management are mainly reflected in the formation of vigorous work style such as quick response and quick action. Our company's customer service center stipulates that employees must be accurate and quick in technical support and SPA-H section steel after-sales service. Through the formation of this fast, agile, vigorous style, to provide users with satisfactory service.