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iso dilo gas fittings Finland

iso dilo gas fittings Finland

ISO 3419:1981(en), Non-alloy and alloy steel butt-welding 1 Scope and field of application. This International Standard specifies the dimensions, tolerances and generally used grades of non-alloy, low-alloy and alloy steels for butt-welding bends (type 2D (90° and 180°) and 3D (45°, 90° and 180°), concentric and eccentric reducers, tees, caps and stub ends with quality requirements as used for

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