Distributed magnetic parts distance network digital display size measurement systems

Cold-rolled steel sheet for condensing pipe with tensile strength of 360 MPa and production method of cold-rolled steel sheet

The invention discloses a cold-rolled steel plate for a condensing pipe with tensile strength of 360 MPa and a production method of the cold-rolled steel plate. The cold-rolled steel plate mainly solves the technical problems that an existing cold-rolled steel plate for a condensing pipe with the thickness of 0.40-0.50 mm is low in strength and poor in formability. According to the technical scheme, the cold-rolled steel sheet for the condensing pipe with the tensile strength of 360 MPa comprises the following chemical components in percentage by weight: 0.0012%-0.0029% of C, less than or equal to 0.03% of Si, 0.50%-0.60% of Mn, 0.032%-0.042% of P, less than or equal to 0.015% of S, less than or equal to 0.003% of N, 0.02%-0.05% of Alt, 0.0002%-0.0006% of B, 0.01%-0.02% of Nb, 0.010%-0.019% of Ti and the balance of Fe and inevitable impurity elements. The r value of the cold-rolled steel sheet is 2.05-2.30, and the cold-rolled steel sheet is used for condenser pipes of ...

磁性零件远程分布式网络化数显尺寸测量系统

The system includes at least one set of measuring device which consists of measuring rule with digital display, convertor RS-232 for digital display rule, converter RS-232C/485, 485 long-wire transmission network, converter RS-485/232C, common card with multi-serial interface and computer. The system features as the follows: the converter RS-232C is formed by measuring signal-level converting circuit built by amplifier and the RS-232C form-output circuit built by chip microcomputer; the converter RS-232C/485 and converter RS-485/232C are formed by transfer interface, interface circuit RS-232Cbuilt by MAX232 and transceiver RS485 circuit built by 75176.

Large-diameter pipeline transportation tool

The invention relates to the field of transportation tools, and discloses a large-pipe-diameter pipeline transportation tool which comprises a transverse steel ring beam and a vertical steel ring beam perpendicularly fixed to the transverse steel ring beam, a hoisting hole is welded to the upper end of the vertical steel ring beam, a hand chain hoist is hung at the lower end of the hoisting hole, and a canvas safety rope is hung at the lower end of the hand chain hoist. The canvas safety rope is used for binding a transported pipeline, a transmission device is arranged below the transverse steel ring beam, a detachable supporting steering device is installed at the foremost end of the pipeline, and the large-pipe-diameter pipeline transportation tool is compact in structural design and good in safety performance. The triangle stabilization principle is mostly adopted in the structural design of the whole transportation tool, for example, the vertical steel ring beams are provided with inclined ...