Do you keep large quantities in stock monthly?

Yes, we are Baosteel's long-term first-level dealer, always keeping a large amount of steel in stock, and give priority to ordering and scheduling production at Baosteel Group as well as Xingcheng Special Steel.

Can we visit your office and the warehouse?

Of course, we welcome you to visit our office and warehosue. We can also show you all all the production lines of steel mills we cooperated with to more about our capacity and quality.

Do you have quality control system?

We have ISO, BV, SGS certifications and cand conduct product performance testing based on customer requirements.

Can you provide steel processing services?

We have multiple warehouses with long-term agreements, able to provide high-quality processing and packaging services to meet your requirement.

What are the payment methods?

We accept T/T and L/C. For other payment methods, please contact us for further communication.

How long is your delivery time?

For goods in stock , it takes 3 to 7 days.If we need to order from steel mills, it will take around 25-45 days depends on the specific products and different steel mills.

How do you keep long-term business and good relationship?

We always keep supplying good quality products with competitive prices and provide one stop service.We wish to establish long-term cooperative relationships with you, to achieve the best interests and to become the true friends.

NM550 Wear Resistant Steel Plate | Hardox 550 Equivalent

NM550 Wear Plate: the 550 HBW Class

NM550 is Baosteel's wear-resistant grade in the 550 HBW hardness class — one step above NM500 for applications that outwear 500 HBW plate, while keeping more forming margin than NM600. Baohui Steel supplies NM550 with the original Baosteel mill test certificate for every shipment.

International equivalents

Mill / standard	Designation
Baosteel · GB/T 24186	NM550
SSAB (Sweden)	Hardox 550
thyssenkrupp (Germany)	XAR 550
Ruukki (Finland)	Raex 550

Real mill certificate data (delivered to Baohui)

Guaranteed values are one thing — delivered steel is another. An original Baosteel inspection certificate from a recent NM550 shipment delivered to Baohui Steel:

Certificate No.	Issued	Size (mm)	Pcs / kg	Yield MPa	Tensile MPa	Elong. %	HBW (3 readings / avg)
BGSAI2609270002500	2026-09-27	5.0 × 1500 × 6000	6 / 2120	1612	1721	11	580 / 580 / 583 → 581

Every shipment includes the original Baosteel mill test certificate; SGS / BV third-party inspection can be arranged before loading.

Where NM550 fits: between NM500 and NM600

If NM500 liners reach end of life too early, but NM600 stretches the budget or the part still needs bending, NM550 is the middle point in the Baosteel wear program. Typical applications: loader and excavator bucket liners, crusher liners and hammers, chute and hopper liners, mixer blades, cutting edges and scraper blades.