Zhangjiagang, Jiangsu-215 611, China
We supply Kellys made from AISI 4145H modified steel alloy in accordance with API-7-1 specification. Our Kelly bars are inspected by ultrasonic units ...Classic Oil Field Chemicals FZCO
Grades H08CrMoA Carbon 0.10 Manganese 0.40 0.70 Silicon 0.15 0.35 Chromium 0.80 1.10 Molybdenum 0.40 0.60 Copper 0.20 Sulfur 0.030 ...Shen Welding Materials Trade Company Limited
ASTM A335 P91 Steel Pipe Product Description Use: Boiler, Superheater, and Heat Exchanger Tube Standard Grade UNS Chemical Composition C Mn P S Si ...Shanghai Unite Steel Trading Co., Ltd
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