There is no such kind of Chinese standard type of artillery, but there is a " self-propelled artillery-自行火炮 (包括:自行榴弹炮和自行火箭炮).

my 2 cents

身管火炮 in fact is also called 野戰砲.

仅供参考：

身管是 barrel。

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Thanks to these new military requirements for modern cannon and ammunition, barrel artillery is a regaining a whole new significance, ... The battlefield effectiveness of barrel artillery is largely determined by the rate of fire. ...
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芬兰155K-98牵引榴弹炮--军事搜索客 - [ Translate this page ]火炮的英文——Artillery来源于拉丁文的artis tollere，意思是“射击的艺术”。自从人类 进入热兵器时代起，火炮就意味着战争。现代身管压制火炮(主要指榴弹炮)在20世纪七、八 十年代经历了一次伟大的变革，155毫米口径就像英语一样得到了绝大多数国家的认可， ...
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在地面压制火炮当中还包括各种***身管火炮,比如,榴弹炮、加农炮、迫击炮、无后坐力炮等等

***火炮(artillery):以发射药为能源、口径在20毫米以上的身管射击武器...传统意义上火炮分三类:榴弹炮、加农炮、迫击炮...

火炮的英文——Artillery来源于拉丁文的artistollere，意思是“射击的艺术”。自从人类进入热兵器时代起，火炮就意味着战争。现代***身管压制火炮(主要指榴弹炮)在20世纪七、八十年代经历了一次伟大的变革，155毫米口径就像英语一样得到了绝大多数国家的认可，成为各国陆军军、师级压制支援火力的“官方语汇”。

Modern artillery is distinguished by its large caliber, firing an explosive shell or rocket, and being of such a size and weight as to require a specialized mount for firing and transport. Weapons covered by this term include "cannon" artillery such as the howitzer, mortar, and field gun and "rocket" artillery. Certain smaller caliber mortars are more properly designated small arms rather than artillery, albeit indirect-fire small arms.

The term "artillery" has traditionally not been used for projectiles with internal guidance systems, even though some artillery units employ surface-to-surface missiles. Advances in terminal guidance systems for small munitions has allowed large caliber projectiles to be developed, blurring this distinction.

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Types
The types of cannon artillery are generally distinguished by the velocity at which they fire projectiles. Naval guns or infantry support guns are typically longer-barreled, low-trajectory, high-velocity weapons designed primarily for a direct-fire role. Typically the length of a cannon barrel is greater than 25 times its caliber (inner diameter).