katalor is a professional steel manufacture in China and we are specialized in hot rolled steel plate. We export GB/T3077 30Mn2 steel plate 5000tons steel plate per month.But we also produce other kinds of steel products. And we could supply the min order is one steel plate and we promise to provide the competitive price in order to enlarge our oversea market of GB/T3077 30Mn2 steel plate . 
Specification in30Mn2 
Thickness: 8MM to 250 MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm
Katalor is specialized in supplying Alloy steel plate in 30Mn2. For more information of 30Mn2 steel plates, please check them in following:

Grade		30Mn2 Mechanical Property
	Thickness	Yield	Tensile	HB
30Mn2	mm	Min Mpa	Mpa	HB
	6-50	635	785	207
	50-200	635	785	207

GB/T 3077 30Mn2 steel plate covers the following issues of hot rolled and forging alloy steel: the dimension, shape, weight, tolerance, engineering specification, test method, inspection rules, packaging, marking, and quality certificates. The standard applies to alloy structural steel bar 250mm maximum diameter or thickness. After consultation between the two sides of supply and demand, bar stock of diameter greater than 250 mm for GB/T3077 30Mn2 steel plate can also be provided.