Carbon Steel Submerged Arc MIG Welding Wire ER70S-4

We offer drum pack welding wire for ER70s-6, ER70s-4, ER70s-3 and many other different types of wire. The wire is well suit the automatic welding, with very high welding performance and efficiency. We are the only factory in China that are able to produce welding wire in whole drum without any welded joints. Our products are well-known for the excellent welding technological properties, stable arc, less spatter, a higher deposition efficiency and being suitable for all positions. Also, our products have passed many international certifications, including ABS, CE, DB, VD, LR, ISO and we are the first factory in China who gets the certificate SG3 for TUV approval.

Features and Applications:
Steel construction and machinery production
Welding of ships, boiler tanks, pipe parts
Welding of thin walled steels
Thin sheet welding in automotive industry
Perfect smooth feedability, perfect welding characteristics
Shielding gases: MAG; Ar+CO2 mix gases, TIG; %100 Ar gas can be used

LT·ER50-6 Conform to Standard :

GB/T 8110 ER50-6

ISO 14341-A-G424C13Si1

AWS A5.18 ER70S-6

JIS YGW12

Chemical Composition(%)

Mechanical Properties of Deposited Metal

Longteng Special Steel Group is a well-known private enterprise in China's special steel industry. Founded in 1993, it is a deep processing enterprise of metal products integrating sintering, ironmaking, steelmaking, refining, continuous casting, rolling and metal product processing. It has an annual output of 4.5 million tons of various special steels and its products are sold to more than 40 countries and regions. Longteng Special Steel Group has ten major business segments. Its leading products include: hot-rolled Marine sections, prestressed concrete (PC) steel bars, high-end wear-resistant steel balls, high-end welding materials, oil and gas pipe fittings, new energy forgings, medium and heavy plates, etc.
Among them, the three major products of Marine steel sections, PC steel bars and wear-resistant steel balls have all become the largest production bases in China, with market shares of over 60% in the domestic niche industries. Among them, wear-resistant steel balls have become the second largest supplier in the world's grinding industry

Vice President Company of CANSI

(China Association of National Shipbuilding Industry)

Six main products series ( 5.0 million tons)
1. Welding Materials
2. Shipbuilding section
3. High-strength pre-stressed concrete steel bar
4. Forging ingot series
5. Steel ball series for bearing & mining industry
6. Flange & End Plate

7: Steel thick plate

As part of our development strategy, we have always been focused on the complete production process model. We believe this will bring us synergy effects. Therefore, recently, a new product, namely welding consumables, has been added to our catalogue. It will cover all series such as gas shielded solid welding wires, flux-cored welding wires, submerged arc wires, argon arc wires, etc., as well as medium and heavy plate series (thickness 6-800mm). Width: 1500mm-3650mm, maximum single weight: 60t

Our LT welding wire has two main advantages:
A fully integrated production process, that is, supported by the world-class upstream steel manufacturing facilities of the same group company.
The newly developed production process, which adopts the latest technologies and know-how, namely fully automatic production, will ensure quality control.
Our advantages of medium and heavy plates:
Complete electric furnaces and off-furnace refining equipment
The rated capacity of the ultra-high power electric furnace is 115 tons, and the maximum steel output per furnace is 130 tons
It has two 115-ton LF refining furnaces and one double-station VD furnace
The largest-sized steel ingots and continuous casting billets
The largest flat steel ingot is 60 tons, and the largest plum blossom steel ingot is 270 tons
The maximum single weight of the ingot steel plate: 60 tons (forged and rolled combined process)
Continuous casting adopts the techniques of dynamic light pressing, dynamic secondary cooling and heavy pressing
The maximum cross-sectional specification of the continuous casting billet is 460*2600*3600mm
Complete rolling line equipment
Advanced split vertical rolling mill