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为了满足战斗条件下的严格要求,提供高的持续射速,迫击炮本身必须具有高强度以及耐高温的性能。为了能夠迅速运动到战斗阵地而且在困难地形条件下容易携带,同时重量必须尽量的轻。英国新型迫击炮采用高强度钢制成的炮管,下半截外表面制有散热片,以便能夠在使用最大号装药长时间射击时散发热量。用特种钢和轻合金制成的炮架有强度高和重量轻的特点。达种用镍、铬、鉬、釩钢制成具有此较高强度的炮管,已进行了试验並投入了生产。用这种钢制造的炮管用远程弹时可提高火炮的性
In order to meet the rigorous requirements under combat conditions and to provide a high sustained rate of fire, the mortar itself must have high strength and high temperature performance. In order to be able to quickly move to combat positions and easy to carry in difficult terrain conditions, while the weight must be as light as possible. The new British mortar is made of high-strength steel barrel, the lower half of the outer surface of the system with heat sink, in order to be able to use the largest charge when shooting a long time radiating heat. Beams made of special steel and light alloy have high strength and light weight. Specimens made of nickel, chromium, molybdenum, vanadium steel with this higher strength of the barrel has been tested and put into production. The use of long-range bombs used in this type of steel can increase the effectiveness of artillery