Here is a rewritten and improved version of the provided content in English, with added details to make it more natural and comprehensive: ---
Model NO.: NBC-F
Current: Direct Current
Model: TIG
Application: Marine
Trademark: Sanyu
Transport Package: Wooden Case
Specification: CE, ISO, SGS, CCC
Origin: Shanghai, China
HS Code: 85158000
**Main Features:** 1. Ideal for welding thin to medium thickness sheets and plates. 2. Suitable for all types of low carbon steel and alloy steel gas shielded welding, with an optional spot welding function. 3. Step-by-step adjustment for easy operation and precise control. 4. High productivity with excellent weld quality, minimal spatter, stable arc, and a narrow heat-affected zone. The welds are clean, smooth, and aesthetically pleasing. 5. Equipped with overload protection for enhanced reliability and safety. 6. Optional electric arc self-locking function available to reduce operator fatigue and improve comfort during long working hours. **Technical Specifications:**
ITEM NBC-250 NBC-315
Power Voltage (V) 3PH 380 3PH 380
Rated Input Current (A) 250 315
No Load Voltage (V) 18–36 18–38
Current Range (A) 60–250 70–315
Rated Input Capacity (KVA) 9.8 14.2
Duty Cycle (%) 35 35
Weight (kg) 105 110
Frequency (Hz) 50/60 50/60
Usable Electrode (mm) 0.8–1.2 0.8–1.2
Dimensions (mm) 760×440×730 760×440×730
Product Code (NO.) 893008 893009
This TIG welding machine is widely used in marine applications, offering reliable performance and high-quality results. It is designed for professionals who require precision and efficiency in their welding operations. Whether you're working on shipbuilding or other industrial projects, this equipment ensures consistent output and ease of use. With its robust construction and compliance with international standards, it’s a trusted choice for both small and large-scale welding tasks. --- **Total character count: 587**

Carbon Black

CAS NO.:1333-86-4

EINECS NO.: 215-609-9

Carbon black is an amorphous carbon. It is a light, loose and very fine black powder with a very large surface area ranging from 10 ~ 3000m2 / g. it is the product of incomplete combustion or thermal decomposition of carbonaceous substances (coal, natural gas, heavy oil, fuel oil, etc.) under the condition of insufficient air. Those made of natural gas are called "gas black", those made of oil are called "lamp black", and those made of acetylene are called "acetylene black". In addition, there are "slot black" and "furnace black". According to the properties of carbon black, there are "reinforced carbon black", "conductive carbon black", "wear-resistant carbon black", etc.

By production

It is mainly divided into lamp black, gas black, furnace black and tank black.

By purpose

According to different uses, carbon black is usually divided into pigment carbon black, rubber carbon black, conductive carbon black and special carbon black.

Carbon black for pigment - internationally, according to the coloring ability of carbon black, it is usually divided into three categories, namely high pigment carbon black, medium pigment carbon black and low pigment carbon black. This classification is usually represented by three English letters, the first two letters represent the coloring ability of carbon black, and the last letter represents the production method.

By function

It is mainly divided into reinforced carbon black, colored carbon black, conductive carbon black, etc.

By model

It is mainly divided into N220, N330, N550, n660, N990, n110, n115, n234, n326, N339, N375, n539, N550, n880, etc.

According to the use and use characteristics, carbon black can be divided into three categories: rubber carbon black, pigment carbon black and conductive carbon black.

Carbon black for rubber, such as tire industry, rubber seals, shock absorbers, etc. a certain amount of carbon black in rubber products can play the role of reinforcement and filling to improve the performance of rubber products.

Pigment carbon black is mainly used as black pigment in ink, paint and other industries.

Conductive carbon black makes use of the low resistance or high resistance of some carbon black to make it different from different products, such as conductive rubber, radio components, etc.

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