What is the standard for channel steel execution?
Standard for channel steel GB707-88
The delivery length of channel steel is divided into two kinds: foot length and double foot length, and the allowable difference is stipulated in the corresponding standard. The length of domestic channel selection range according to specifications, divided into 5 - 12M, 5 - 19m, 6 - 19m three. The length of imported channel steel is generally 6 - 15m.
At the same height, the light channel steel has narrower legs, thinner waist and lighter weight than ordinary channel steel. 18 - 40 is large channel steel, 5 - 16 channel steel is medium channel steel. Imported channel steel shall be marked with actual specifications, sizes and relevant standards. Steel import and export orders generally is identified in the corresponding (carbon steel or low-alloy steel), to use the required specifications. Except for specification, channel steel has no specific composition and performance series.
