C&N Hongcheng will Participate in neftegaz-expo 2025

C&N Hongcheng confirmed will attend International Exhibition for Equipment and Technologies for Oil and Gas Industries neftegaz-expo 2025 ， C&N HONGCHENG with over 10 years export to Russia, and we have account can receive payment from Russia company.
Neftegaz at EXPOCENTRE Fairgrounds
Russia’s main oil and gas show since 1978!

Neftegaz and National Oil and Gas Forum the major event of the fuel and energy sector.

The exhibition and forum bring together the whole industry to show all new products and trends. It is a meeting point for manufacturers and consumers to network, find the latest information, and attend the most important associated events.

GOST Standard

GOST 20295 – 1985
Name: Steel Welded Pipes for Main Gas-and-Oil Pipelines Specifications;
Grade: K34, K38, K42, K50, K52, K55, K60;
Download: GOST 20295 – 1985;

GOST 380 – 2005
Name: Common Quality Carbon Steel;
Scope: This Standard applies to common quality carbon steel designed for manufacturing of hot rolled stock: bars, structural shapes, plates, sheets, wide flats, and cold-rolled sheets as well as ingots, blooms, slabs, billets, rolled stocks, and continuous cast castings, pipes, forgings and stampings, tapes, wire, hardware, and so on.
Download: GOST 380 – 2005;

GOST 8731 – 1987
Name: seamless hot-deformed steel. Technical requirements;
Grade: 10, 20, 35, 45, 20X, 40, 15XM, 30XMA, 12XH2, etc.
Download: GOST 8731 – 1987;

GOST 8732 – 1978
Name: Seamless Hot-worked Steel Pipes. Range of Sizes;
Dimensions: 20 mm – 550 mm;
Download: GOST 8732 – 1978;

GOST 8733 – 1987
Name: Cold-formed and heat-formed seamless steel pipes. Technical requirements;
Scope: The standard applies to cold deformed general-purpose pipes made of carbon and alloy steel.
Grade: 10, 20, 35, 45, 09G2S, 10G2, 15X, 20X, 40X, 30KHGSA, 30KHGSA, 15ХМ;
Download: GOST 8733 – 1987;

GOST 8734 – 1975
Name: Seamless Cold-formed Steel Pipes;
Scope: It covers the technical specifications for seamless cold-formed pipes made of corrosion-resistant high-alloy steel.
Dimensions: 5 mm – 250 mm;
Download: GOST 8734 – 1975;

GOST 9941 – 2022
Name: Seamless cold-formed pipes made of corrosion-resistant high-alloy steels;
Scope: It covers the technical specifications for seamless cold-formed pipes made of corrosion-resistant high-alloy steel;
Dimensions: 5 mm – 426 mm;
Grade: 03X17H14M3, 03X18H11, 04X18H10, 05X18H10T, 06XH28MAT, 08X13, 08X17H15M3T, 08X17T, 08X18H10, 08X18H10T, 08X18H12T, 08X18H12B, 08X20H14C2, 08X21H6M2T, 08X22H6T, 10X17H13M2T, 10X23H18, 12X13, 12X17, 12X18H9, 12X18H12T, 15X25T, 17X18H9;
Download: GOST 9941 – 2022;

GOST 10704 – 1991
Name: Electric Line Welded Steel Tubes. Range of Sizes;
Dimensions: 10 mm – 1420 mm;
Download: GOST 10704 – 1991;

GOST 10705 – 1993
Name: Electrically Welded Steel Pipes;
Download: GOST 10705 – 1993;

GOST 10706 – 2001
Name: Metal Pipes and Fittings Part 3 Welded Pipes;
Download: GOST 10706 – 2001;